Hi, I figured this would be a good topic to post in for my issue, because it regards the Samsung Galaxy S II (similar to the Nexus, and it was released in September 2011)…
I bought one of your four port BC1.1 hubs, because I need to be able to use my phone’s USB connection while charging at high rate. The Galaxy S II will charge at 1000mA while hooked to the AC adapter (presumably has the data pins shorted) or 100mA when connected to an actual USB port. It does not do software negotiation for extra power units.
Unfortunately I hit a snag. If your hub has the AC adapter connected to it (regardless of if it is connected to a computer host), the phone goes into high rate charge, but does not activate the USB connection.
If the hub is connected to a host but does NOT have the AC adapter plugged in, when I plug the phone in, the USB mode activates but it is in low rate charge. If I plug the AC adapter in at this point, it stays in low rate charge.
If I read the spec correctly, you are supposed to be able to use the USB 2.0 mode while fast charging, correct?