Hey guys, as stated in the other thread, I found a potential solution to charging and using data at the same time. While experimenting with the charging hardware, I built a custom USB Y Cable, basically a USB extension with a power cable spliced in. The male side I then attached to a standard otg adapter (USB A to micro-B). This did not let the AVN8 charge, though data connection worked, and the host port did charge (i.e. an external HDD would spool up from the adapter's power). Then I tried the Dell Venue 8 Pro's fix, of shorting the D+ and D- leads together. This doesn't change anything, it doesn't charge. Besides, this doesn't conform to USB standards. I googled and read up on the USB Charging specification 1.2 (a dry 74 page pdf :S ), and found that there is an additional 5th, ID/Sense pin on micro USB. This can be either shorted to GND, or connected at 124k, 68k, or 36.5k Ohms for different features. Basically 124k is what we want, that signals the device to take power but also connect data. So I put it all on a breadboard with a wired up micro-B plug, and the side of my USB Y-splitter where the male Data end used to be (where the otg adapter would previously connect). Initiating contact with the 5th pin either floating (disconnected from everything else), having 124k/68k/36.5k to GND, or even on 100k to GND (makes it easier with 1 resistor), all gives the same result: it charges, but doesn't do data. Initiating with 5th shorted to GND, it does data but doesn't charge (just like with the otg adapter). Here's my preliminary solution: Initiate with the 100k from Sense to Ground to start charging, then flip a switch (or connect a jumper) between Sense and Ground to allow data to pass. This allows charging and simultaneous data transfer (only tested with USB stick for now). Apparently, the charging circuit only tests the Sense pin once (at initiation), while the data circuits poll it constantly. This all happened yesterday, and in testing some more, I saw that on the desktop taskbar the battery charge animation stops, even though it still shows the plug by the battery (it might do that anyway though, I'm not 100% sure). If you tap the icon it stops charging, the screen changes brightness to the "on battery" preset, and the icon switches to battery only (no plug). Seems like when you tap the icon the charge circuitry gets polled again, and that checks the Sense pin and sees it's in the wrong state. So though this is more than we had up to now, it's not great... I assume we would have to modify the USB driver to not poll the Sense pin, and just allow everything on USB since it is technically capable, but neutered by software. Would be a much easier task on Linux than Windows... TL;DR Simultaneous charging and OTG seem to work with special circuitry until you tap the battery icon, then charging disconnects.