[Q] USB OTG - Galaxy S III Q&A, Help & Troubleshooting

I saw a lot of videos on the internet talking about the SGS III's ability for OTG USB connections and I decided to try them out. While I was able to run a PSX Controller, a wireless keyboard and a mousewith the cable, I was able to get it to detect only a 4 GB pendrive and only in FAT32 format. It outright refused to detect my HDD of 160GB and 500GB {both NTFS} or my 8GB microSD card which I put in through a card reader. Now, most sites I've seen using the OTG feature use the 2nd cable I've posted as an attachment. I know this is an absurd longshot, but is there anyway that my using the cable in the 1st attachment instead of the second a reason for why it isn't working for me? If not, what am I doing wrong?

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No, the cable is just fine if it works for some devices. Most generic ones just work fine.
The actual reasons are multiple:
NTFS is not supported by the stock kernel. Flash e.g. the aftermarket Siyahkernel to use the devices
Card readers need drivers, they are not "real" mass storage devices. I'm not sure if and which drivers are included in the kernel.
USB 2.5" HDD's without external power supplies need a HUGE amount of power, often even above the specified 500mAh. I don't think the S3 can provide that much power and you may damage it trying or even if it works (Altough I think it has a limiter, but better safe than sorry)

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d4fseeker said:
No, the cable is just fine if it works for some devices. Most generic ones just work fine.
The actual reasons are multiple:
NTFS is not supported by the stock kernel. Flash e.g. the aftermarket Siyahkernel to use the devices
Card readers need drivers, they are not "real" mass storage devices. I'm not sure if and which drivers are included in the kernel.
USB 2.5" HDD's without external power supplies need a HUGE amount of power, often even above the specified 500mAh. I don't think the S3 can provide that much power and you may damage it trying or even if it works (Altough I think it has a limiter, but better safe than sorry)
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Thank God. I thought I screwed up the device somehow. I understand. I merely wanted to see whether or not I have support. I highly doubt I'll do anything beyond actually playing using the PSX Controller, but I wanted to know how far it can go. Just one more question. Flashing an aftermarket kernel means data loss right?

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Depends. You usually have (or at least are strongly recommended to) factory-reset the device due to the low-level changes between the ROM's which can and will cause issues.
However that is not really an issue;
Just copy your whole internal sdcard (/mnt/sdcard) to an USB stick and do the same with your Apps through Titanium Backup.
Then restore both again after having flashed the custom ROM and you're up and running without data loss.
You'll need root for Titanium Backup tough, just flash Siyahkernel or CF-Root through Odin to gain the privilege.