Not sure if it’ll work, but my old Dell 8″ Windows tablet behaved like this – apparently because of a BIOS setting from what I had read. To get it to work, I bought a cheap charge/sync cable from eBay, and started the tablet on charge, until post BIOS (IE Windows logo came up), then switched to sync mode. This allowed the tablet to keep charging, and since it was plugged into a cheap powered hub (regular, not otg – a handful of splitters were involved!), I had full time mouse keyboard, external drive, and card reader. I was even able to drive a 1680×1050 monitor over USB, though it was a bit laggy (usb 2.0 FTL) for anything beyond casual browsing and office use – no full screen YouTube!
The only downside was that if it wasn’t touched almost daily, it would go to sleep long enough to discharge and I’d need to restart the process. Not a huge deal for me, but a show stopper for my wife, who gamely used it for 6 months, before I upgraded the tablet.
No guarantee that this will work, but I can probably track down a part list if anyone is interested. (Total cost was about $10, plus shipping from China to Canada).
