Develop Bugs

[Q] Official Samsung OTG MicroUSB to USB adapter

Has anyone tried this genuine samsung cable ? I would like to know if this is a true OTG and not just a microUSB to USB adapter. Also, does it support usb mice and keyboards etc ?
I'm not allowed to post links yet, but it is available on mobilefun already.

I have bought dealextreme.com/p/micro-usb-on-the-go-host-otg-adapter-pair-50774 My 16gb flash works fine, but mouse dont. I tryed 2 mouses. One is simple with usb wire, other is wirreles. But no one worked. When I connect, just nothing happned. Any idea how to make it work?

I bought a no name OTG cable in Hong Kong and it works fine, tried my flash drive, my kensington usb wireless keyboard/mouse combo, and my logitech wireless mouse. all of it works fine! can post pics if necessary.

jlky said:
I bought a no name OTG cable in Hong Kong and it works fine, tried my flash drive, my kensington usb wireless keyboard/mouse combo, and my logitech wireless mouse. all of it works fine! can post pics if necessary.
Click to expand...
Click to collapse
Pls post that otg cable pics.

I bought the OTG cable. It works like a charm and it cost me 15euros. At least it's got the Samsung logo on it.
I bought a Samsung charger too and guess what. The microusb is moving when insert it in the phone. I have to keep it in place in with my hand to charge it...

darius92 said:
I have bought dealextreme.com/p/micro-usb-on-the-go-host-otg-adapter-pair-50774 My 16gb flash works fine, but mouse dont. I tryed 2 mouses. One is simple with usb wire, other is wirreles. But no one worked. When I connect, just nothing happned. Any idea how to make it work?
Click to expand...
Click to collapse
If it's the wireless one: It could use a driver that GS2 don't has or it's recognized as a high-power device, in the last case though the phone should print a warning...

USB to Note 10.1?

Hi guys, just wondering is there any adaptor to connect a USB stick to the note 10.1? i have alot of movies so would be handy to save them all to USB and if i can, connect that to my 10,1
if it is do-able, whats the best product out there for it?
Many thanks

vamosdan said:
Hi guys, just wondering is there any adaptor to connect a USB stick to the note 10.1? i have alot of movies so would be handy to save them all to USB and if i can, connect that to my 10,1
if it is do-able, whats the best product out there for it?
Many thanks
Click to expand...
Click to collapse
just found the official samsung one, looks like it will do the job and only £14.99
Sorry mods, can you close this thread
Cheers

Hi Guys,
What do you guys think of this on Amazon?
Samsung Galaxy Tablet 4-in-1 Connection Kit : USB, SD Memory/micro SD, Micro USB Adapter : Galaxy Tablet: 7.0 Plus/7.7/8.9/10.1 & Galaxy Note 10.1
USB Host = Reads Hard Disks, Digital Cameras & Keyboards
Micro USB = Sync with PC and Charge Tablet
SD Card Slot = Reads SD Memory Cards
Micro SD Slot = Reads Micro SD cards

Link
wgraz said:
Hi Guys,
What do you guys think of this on Amazon?
Samsung Galaxy Tablet 4-in-1 Connection Kit : USB, SD Memory/micro SD, Micro USB Adapter : Galaxy Tablet: 7.0 Plus/7.7/8.9/10.1 & Galaxy Note 10.1
USB Host = Reads Hard Disks, Digital Cameras & Keyboards
Micro USB = Sync with PC and Charge Tablet
SD Card Slot = Reads SD Memory Cards
Micro SD Slot = Reads Micro SD cards
Click to expand...
Click to collapse
Could you put the link for it?
Thank you

The hodateda
mgunthi said:
Could you put the link for it?
Thank you
Click to expand...
Click to collapse
I though new members could not post links. I'll try. Yes, the link is HERE

This is the one I got.
http://www.amazon.com/gp/product/B005O252GG/ref=wms_ohs_product
Works well.

toenail_flicker said:
This is the one I got.
Works well.
Click to expand...
Click to collapse
I have this too, but I bought one for use when the tablet is tilted.
Is an SD Card Reader, USB Adapter / HUB, and OTG Adapter with 3 usb port and 4 types of card.
---------- Post added at 07:41 PM ---------- Previous post was at 07:35 PM ----------
wgraz said:
I though new members could not post links. I'll try. Yes, the link is HERE
Click to expand...
Click to collapse
I recommend one with a cable to be able to use with the tablet tilted.
Know i have one with a cabe, the SD Card Reader, USB Adapter / HUB, and OTG Adapter.
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
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Don't get what you mean. They both work the same.
---------- Post added at 12:28 PM ---------- Previous post was at 12:27 PM ----------
Please give link to example.

toenail_flicker said:
Don't get what you mean. They both work the same.
---------- Post added at 12:28 PM ---------- Previous post was at 12:27 PM ----------
Please give link to example.
Click to expand...
Click to collapse
I apologize for not explained myself well. I will take a photo to exemplify.

Thank you.

mgunthi said:
I have this too, but I bought one for use when the tablet is tilted.
Is an SD Card Reader, USB Adapter / HUB, and OTG Adapter with 3 usb port and 4 types of card.
---------- Post added at 07:41 PM ---------- Previous post was at 07:35 PM ----------
I recommend one with a cable to be able to use with the tablet tilted.
Know i have one with a cabe, the SD Card Reader, USB Adapter / HUB, and OTG Adapter.
Click to expand...
Click to collapse
I'm quite a beginner in the Android arena. Can anyone else recommend a good all in one adapter with a cable then? Thx.

This is what i was trying to say.
in this picture (first attached) the tablet using this usb adapter you couldn't put it inclined.
using a cable you can put it in this position (second attached).
or this (third attached)
One more thing. This USB HUB cable, that you see on picture, work fine with some pens but with this one "Data Traveler 32Gb G3" that i use on work, doesn´t work, it said that need extra power. I need to search more to see what is happening.

Thanks for the shots. I just flip my Note over so the connection is on top.

wgraz said:
I'm quite a beginner in the Android arena. Can anyone else recommend a good all in one adapter with a cable then? Thx.
Click to expand...
Click to collapse
I can't seem to find an all-in-one adapter with the short cable as mgunthi suggested. I'm looking for an adapter for USB, SD and Micro SD and Micro USB. I guess there's a need for Micro or Mini USB for an External HD? If it's a mini USB, I'll just get an mini to micro USB adapter for the adapter? LOL Thanks.
Unless I just turn it upside down as requested by toenail_flicker

I have a external hard drive that I used to use via a usb to micro usb adapter with my old Sony Tablet S....
Who can recommend a cable/adapter to do the same for the Note 10.1 im buying on Monday!
The hard drive is usb with no external power source.
Sent from my GT-N7100 using xda app-developers app

I have another question please. Can you use any USB-connected card reader on this tablet? Would it work fully with all card types? For instance using this one:
Kingston 19-in-1 USB 2.0 Flash Memory Card Reader FCR-HS219/1
Of course you need to use this with a USB adapter OR a female to female USB connector with the supplied USB cable. Would it work smoothly?
Thank you

wgraz said:
I have another question please. Can you use any USB-connected card reader on this tablet? Would it work fully with all card types? For instance using this one:
Kingston 19-in-1 USB 2.0 Flash Memory Card Reader FCR-HS219/1
Of course you need to use this with a USB adapter OR a female to female USB connector with the supplied USB cable. Would it work smoothly?
Thank you
Click to expand...
Click to collapse
Sorry but not all usb card reader works fine. I have on similar to the one you show here and i can't read a compact flash card, the note 10.1 send me a message that it not work, need more power to read the card.
I didin't test any other card because i have the usb cable for note 10.1 and i connected this to my nikon d300 and works fine, for sd card i use the card reader that i show before and it works ok.

mgunthi said:
Sorry but not all usb card reader works fine. I have on similar to the one you show here and i can't read a compact flash card, the note 10.1 send me a message that it not work, need more power to read the card.
I didin't test any other card because i have the usb cable for note 10.1 and i connected this to my nikon d300 and works fine, for sd card i use the card reader that i show before and it works ok.
Click to expand...
Click to collapse
Thank you for the heads up.So the card reader probably does not work at all. I would think at least it would work with SD cards! Anyone else? Thank you.

So the general report is buy cause it works and does everything or dont buy cause it always needs extra power and can I use this to plug in a external dvd drive that gets ac power from something and play dvds like nexus 7

USB Adapter
You have to buy USB Adapter.

Otg type-c adapter problem

Hello everybody, i just received a usb type-c to female usb adapter (made by Victsing®) from amazon on this link amazon.fr/VicTsing-Adapteur-Convertisseur-Chromebook-appareils/dp/B017I8A40CUnfortunately it is not working on my oneplus 2. I plugged a mouse, xbox 360 controller, usb pen drive and it didn't even turned on. No lights, nothing...
Is there any tweak or app to instal to make it work? My opt is rooted and xposed is installed.
Thanks in advance!

karimfilal said:
Hello everybody, i just received a usb type-c to female usb adapter (made by Victsing®) from amazon on this link amazon.fr/VicTsing-Adapteur-Convertisseur-Chromebook-appareils/dp/B017I8A40CUnfortunately it is not working on my oneplus 2. I plugged a mouse, xbox 360 controller, usb pen drive and it didn't even turned on. No lights, nothing...
Is there any tweak or app to instal to make it work? My opt is rooted and xposed is installed.
Thanks in advance!
Click to expand...
Click to collapse
after looking through many forums, it seems that the issue is that OnePlus has used a slightly different setup with a 2.0 usb type-c connector so it doesn't work with anything other than their first party connectors. I have tried to connect a kingston data traveler microduo 3c and it isn't recognised either

So the issue is a hardware problem i guess, only solution is to buy their usb type c to micro usb adapted and then plug OTG cable?
So there will be no software fix...

Where do we find this orignal convertor

karimfilal said:
So the issue is a hardware problem i guess, only solution is to buy their usb type c to micro usb adapted and then plug OTG cable?
So there will be no software fix...
Click to expand...
Click to collapse
It may be possible for them to provide an update that creates a workaround to the problem however that does not seem very likely, i guess we just have to wait and see
---------- Post added at 11:24 AM ---------- Previous post was at 11:19 AM ----------
izzikiorage said:
Where do we find this orignal convertor
Click to expand...
Click to collapse
the original converter would be on the oneplus site or i have heard they are also available on Ali Express

So not in India yet i guess

Hmm... I have the original OTG cable from oneplus, 2 other OTG cable ( 1 is USB 2 and the other works both with USB2 and USB3 with power up mass storage) and none of them work for my OPT.... HOWEVER they work for my OPO.... fking oneplus....

Thank you for your responses.
Hope that android MM or CM will give a solution!

i asked the oneplus official, they said ONLY THEIR OTG adapter can work with OPT...
and what's worse, they are currently out of stock of this stupid adapter! They told me to visit offline shops. oh are you kidding?

well that sucks. I was planning to buy a OPT but decided not to. they decided to leave quick charge/turbo charge alone and made some modifications on their port so only their product would work. what about the countries where it's hard to ship a product. damn this is lame

I bought a third-party USB-C to Micro-USB adaptor from Amazon that works with Micro-USB OTG drives and my old Micro-USB OTG cable with a USB mouse & USB memory sticks.
Amazon.co.uk
Amazon.com

karimfilal said:
Hello everybody, i just received a usb type-c to female usb adapter (made by Victsing®) from amazon on this link amazon.fr/VicTsing-Adapteur-Convertisseur-Chromebook-appareils/dp/B017I8A40CUnfortunately it is not working on my oneplus 2. I plugged a mouse, xbox 360 controller, usb pen drive and it didn't even turned on. No lights, nothing...
Is there any tweak or app to instal to make it work? My opt is rooted and xposed is installed.
Thanks in advance!
Click to expand...
Click to collapse
I have 3 party adapter and it does not work!

@b.age Stick mount by chainfire on play, should work for you. OTG c seems to be okay on booted devices the problem for me is twrp

Archtects said:
@b.age Stick mount by chainfire on play, should work for you. OTG c seems to be okay on booted devices the problem for me is twrp
Click to expand...
Click to collapse
Thanks for reply I'll try this method.
Anyway I bought an OTG adapter (uUSB) and an uUSB-TypeC adapter (Xiaomi) and it works! (seems the problem is type C otg are always 3.0 op2 does not support USB 3.0 standard)

Mmm tbh I only use my USB stick and that always seems to work okay. USB C is just future proofing got to wait for rest to catch up now.

One Plus 3T OTG and Micro USB to type C adaptors/ Oneplus3t OTG capabilities

I had some initial difficulty getting a micro usb OTG cable working, I ended up testing a few and thought I would share in case it saves anyone else some time or money.
if anyone else has adapters they've tried feel free to list them
I actually haven't tried a straight USB type C OTG cable yet, all have been micro USB OTG units with a micro USB to type C converter since I already had so many lying around.
First off I should mention not all micro usb to USB type C converters support OTG.
this Meenova one does and works with the oneplus 3t: https://www.amazon.com/gp/product/B018G6IK7E/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
with that converter pretty much any OTG adapter will work.
Charging also works.
This micro USB OTG adaptor is nice because its so low profile.
I tested it with a flash drive and it works fine with the Meenova adapter listed above.
https://www.amazon.com/gp/product/B0196FG4DG/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
This Samsung adapter also works well with the Meenova adapter, it has quite a few features which I tested on the Oneplus 3t, its expensive though so unless you have a Samsung tablet as well its not likely to be worth it for most people:
built in features:
two USB ports
Ethernet port
Charging port for simultaneous charging and OTG
On the Oneplus 3t both charging and OTG work fine but not at the same time.
whichever you plug in first is what it will use until you unplug and re-plug in the adapter.
That being said my understanding is that this is likely just a kernel limitation, it was the same way on the nexus 7 and a custom kernel enabled the simultaneous charging.
I'm not sure how useful that would be on a phone but I thought I would mention it.
Both USB ports work simultaneously, I connected two flash drives and both were picked up by the phone right away.
I wasn't able to get the Ethernet port working, or at least there was no indicator that it was working (My samsung tablet gives a notification that the Ethernet is plugged in but Samsung may have added that, I'm not sure) I'll play with it some more later.
Adaptor link: https://www.amazon.com/gp/product/B00J2N0GB4/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
and lastly I tried this micro USB to type c adapter and charging works but OTG does not:
https://www.amazon.com/gp/product/B0191FRCAA/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Thanks for your post about OTG adapters. Do you have any updates on this issue? I'm looking for possible adapters but cannot find any.
The Meenova adapter is not available in Europe and also seems not to be available from Amazon.com anymore. I can also disadvise from Anker USB adapter because it doesn't work.
What I'm looking for is an USB typ-C to microUSB adapter for audio output via USB.

Anker adapter supports dash charge (works with oppo vooc power bank). I am trying OTG now, but I have some cheap OTG dongle (https://www.aliexpress.com/item/5pc...G-adapter-for-HTC-for-Samsung/1734417126.html) and I am not sure if it works at all Anyway OTG via Anker is not working for me at this moment.

mmmm1234 said:
Thanks for your post about OTG adapters. Do you have any updates on this issue? I'm looking for possible adapters but cannot find any.
The Meenova adapter is not available in Europe and also seems not to be available from Amazon.com anymore. I can also disadvise from Anker USB adapter because it doesn't work.
What I'm looking for is an USB typ-C to microUSB adapter for audio output via USB.
Click to expand...
Click to collapse
i have this one
http://www.ebay.co.uk/itm/381793306261
Black / For One Plus Two 2 3 (that's what it says in the drop down)
my Fiio E10k headphone amplifier works with it if that's what you're looking for

reubenbubu said:
i have this one
Black / For One Plus Two 2 3 (that's what it says in the drop down)
my Fiio E10k headphone amplifier works with it if that's what you're looking for
Click to expand...
Click to collapse
Thanks! Though it's USB type B. I need micro USB.

USB OTG Poorly Supported

USB-C to USB-A OTG Cable -
Not able to power a simple external USB MSata Drive or External USB HDD - I plug these drives into a LG V10 or a Galaxy S8 and work perfectly fine. What gives? I have only able to get a flash drive to work.
Any known work a rounds? Anyone else try this?
Thanks,

No answers for this?

XE-Cherokee said:
No answers for this?
Click to expand...
Click to collapse
I tried this just now and am shocked it doesn't work either.

I wonder if OTG power support was removed due to the decrease in battery size? Has anyone tried OTG "audio output", say through a device like the audioquest dragonfly, to see if that works??

Amd4life said:
I wonder if OTG power support was removed due to the decrease in battery size?
Click to expand...
Click to collapse
I don't think so, since the notification that pops up when I connect 32 GB ADATA USB 3.0 flash drive -> USB 2.0 A female to micro-B male OTG cable -> micro-B female to USB-C male adapter -> Z2F says the Z2F is providing power to the connected device. The problem is you can't do anything else BUT that.
Amd4life said:
Has anyone tried OTG "audio output", say through a device like the audioquest dragonfly, to see if that works??
Click to expand...
Click to collapse
I'm wondering this myself. The fact that the Z2F outputs analog audio over USB-C leads to me to believe that it isn't fully USB-compliant.* Both the HTC U11 and Google Pixel 2 output digital audio, which, based on Google's crowing about USB-PD and the existence of devices like the dragonfly, appears to be the right way to do things (albeit with the tradeoff of more expensive audio peripherals, which much now have their own onboard decoding hardware.)
*Can anyone with knowledge of the USB spec comment on this?
BTW, I started a support thread about this at the official forum, where it's received several replies and suggestions from a mod. Kindly chime in there too so Lenovo can see this is a real issue they need to address.
---------- Post added at 12:46 ---------- Previous post was at 12:25 ----------
Amd4life said:
Has anyone tried OTG "audio output", say through a device like the audioquest dragonfly, to see if that works??
Click to expand...
Click to collapse
So based on this Motorola mod post and the OP's statement that USB-C flash drives work, the Z2F and Z have the same (lack of? LOL) OTG functionality. The Moto Z subreddit has a pretty extensive thread about Moto Z DAC functionality; it appears the Dragonfly is supported, among others.
---------- Post added at 12:59 ---------- Previous post was at 12:46 ----------
Interesting development: another Motorola Forms mod now says powered USB hubs are rumored to work. We're making progress, folks.

Okay fellas,
I so far have been able to get certain drives to work and others not! I have tried 2 different USB-C to USB-A cables and get the same results, 1st ones an HP cable and 2nds an Anker USB-C to USB 3.1 Adapter
https://www.amazon.com/gp/product/B01COOQIKU/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I have been able to get a 256gb M2Sata Drive, 500gb WD Mypassport, and a 2TB Mypassport to read.
I also have a 256gb MSata Drive that will not power up or read without using a powered usb hub. However the Msata Drive will read without an added powered HUB. On the Samsung and LG Devices.
Only thing I can think of is that certain drives have higher amperage that the Moto Z2 simply cannot push through its USB-C Port.

Good to know it isn't just me experiencing broken USB OTG support.
I've got a PS3, PS4, and Xbox one controller I hook up with USB OTG. Normally it's as simple as plug n play and I'm good to go. However, that doesn't seem to be the case here. I can still pair the PS3/4 controllers in sixaxis just fine and get power to the PS3/4 and Xbox one controllers. And yes, that bit about supply power to device rather than transfer and you can't pick something else, happens to me too. Sometimes I can plug my thumb drive in and I can explore through the storage file explorer, but I usually have better luck with an app called X-Plore.
This one time I even had said thumb drive take out my entire OS to the point where I had to use that June ROM to reset me back to start. Spoiler alert: I kept getting "Android.process.acore keeps crashing" over and over; various other apps kept crashing as well.
On a side note if I can at least get PS3/4 controllers to work for a long time within say, sixaxis (or similar) I'd appreciate any tips. Otherwise I either gotta wait for this to be solved in a future upgrade, future sixaxis, or when we start getting custom ROMs..

XE-Cherokee said:
Okay fellas,
I so far have been able to get certain drives to work and others not! I have tried 2 different USB-C to USB-A cables and get the same results, 1st ones an HP cable and 2nds an Anker USB-C to USB 3.1 Adapter
https://www.amazon.com/gp/product/B01COOQIKU/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I have been able to get a 256gb M2Sata Drive, 500gb WD Mypassport, and a 2TB Mypassport to read.
I also have a 256gb MSata Drive that will not power up or read without using a powered usb hub. However the Msata Drive will read without an added powered HUB. On the Samsung and LG Devices.
Only thing I can think of is that certain drives have higher amperage that the Moto Z2 simply cannot push through its USB-C Port.
Click to expand...
Click to collapse
This is excellent information, thanks a lot man.

So FYI I tried the Anker adapter @XE-Cherokee linked to and it worked perfectly. That seems to be the solution for now.

XE-Cherokee said:
Okay fellas,
I so far have been able to get certain drives to work and others not! I have tried 2 different USB-C to USB-A cables and get the same results, 1st ones an HP cable and 2nds an Anker USB-C to USB 3.1 Adapter
https://www.amazon.com/gp/product/B01COOQIKU/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I have been able to get a 256gb M2Sata Drive, 500gb WD Mypassport, and a 2TB Mypassport to read.
I also have a 256gb MSata Drive that will not power up or read without using a powered usb hub. However the Msata Drive will read without an added powered HUB. On the Samsung and LG Devices.
Only thing I can think of is that certain drives have higher amperage that the Moto Z2 simply cannot push through its USB-C Port.
Click to expand...
Click to collapse
Appreciate the heads up, to confirm this adapter works perfect with my external drives, and as an added plus, also my external DAP/amps for audio playback.

Amd4life said:
Appreciate the heads up, to confirm this adapter works perfect with my external drives, and as an added plus, also my external DAP/amps for audio playback.
Click to expand...
Click to collapse
This is huge, thanks!

jdrch said:
This is huge, thanks!
Click to expand...
Click to collapse
The latest Neutron and USB Audio Player Pro will output bitperfect (non upsampled) audio perfectly to both my portable DAC/amp units.
USB Audio Player pro, has the benefit that you can stream tidal native, bitperfect if you have an acct. Which is awesome imo. Tidal still buffers SUPER slow on this device though. So I'd recommended only offline use (which you CANT do with USB audio player pro due to licensing)
I would also add that I get some scratchiness out of the stock USB C to 3.5mm dongle that came with the phone. I thought it was the port being "dirty",. but I have NO NOISE out of the USB audio output using the Anker otg cable. Maybe Anker makes a USB c to 3.5mm adapter.

One tip for getting USB powered OTG drives to work is to use as short a USB cable as possible. Like get a good quality 1ft USB cable. I used to have a similar problem with using an external drive on a Wii and found that a 1ft cable would allow me to use 2 different drives that otherwise would not work with a 6ft cable.

It worked!
I used a USB 2.0/type C adapter that cames with s8 and instead the original USB 3.0 cable, put another adapter, and transferred files with Total Commander.

On this subject but kinda off topic. How are you all getting your drives mounted? I cannot mount NTFS or fat32 drives. Only ext3/4 drives.

israelnobrega said:
I used a USB 2.0/type C adapter that cames with s8 and instead the original USB 3.0 cable, put another adapter, and transferred files with Total Commander.
Click to expand...
Click to collapse
Yep, basically you created a 2 inch cable. LOL.
In essence, many USB powered hard drives approach the power limit of what the USB port can output. Power drops over the length of a USB cable, so longer cables may not provide sufficient power for the drive to function correctly. Better quality cables usually have less power drop, though it is not a guarantee.
Unfortunately most USB powered drives do not list their power requirements. The only way to really tell is to open the case for the USB drive and look at the hard drive inside it to find how many amps it draws. For the best compatibility you want the lowest amps.

I don't think that's otg power issue. I think it is locked by Moto becuase they want you to use their add-on devices. I have a wifi camera it doesn't work either, But it works in my all other phones

bobyang said:
I don't think that's otg power issue. I think it is locked by Moto becuase they want you to use their add-on devices. I have a wifi camera it doesn't work either, But it works in my all other phones
Click to expand...
Click to collapse
Just because an add-on device works for one USB OTG implementation doesn't mean that it works on all USB OTG implementations. There is an enumeration of what devices and types are accepted. I have tested USB OTG audio microphones, USB OTG audio speakers, USB OTG Headphones, USB OTG Ethernet, USB OTG Keyboards, USB OTG Flash drives and those device types work. If there is no device driver for the device attached then it would need to be supplied by an app. OTG power drain is definitely an issue and is mentioned in the OTG specifications.

That's what I tried to say. It is locked by Moto. They want you to use their add-on mod. I have tried extrenal usb c endoscope camera, wifi endoscope camera, lg wireleas projector, Samsung projector. None of them work with Moto. However, the same apps work in all other phones. It is clear to see, it is not all otg related all the time or driver which provided by app. It could be just locked by Moto, becuase they want use to use their mod add-on. People who rooted the phone was able to turn on those supports.

I use a Belkin OTG adapter, it worked but it was extremely picky. The Built in files app only picked up my HDD if it was either Fat32 or exfat. But the ES File Explorer app only picked up NTFS.