PC hangs during post when webcam is plugged in

My PC keeps hanging during POST, just before identifying the amount of RAM, anytime I have my webcam plugged in. If I unplug the webcam, it will unhang and continue to boot up just fine. It also occasionally locks up windows if I have the webcam plugged in.

• I have the latest BIOS for the mobo, 2.20.
• The webcam is plugged into a powered Macally USB hub, so it should be getting plenty of juice.
• I recently replaced the power supply, thinking it might be the cause, before I identified the webcam as the culprit.
• I tried disabling legacy USB support.
• I tried removing USB from the boot order.

Motherboard: ASRock 4coreDual-SATA2
Webcam: Ausdom AW310

How can I make these two play nice with each other?