Using 2 USB 2.0 UGA 2048x1152 adapters on a Vista 32bit dual processor (amd turion 64x2). I was experiencing monitor blinking… like there was a device conflict. Since adding 2 USB plugins to my laptop took half my USB ports I decided to utilize a powered 2.0 HUB. I moved the display adapters to the hub and the the blinking got worse. I decided to try moving one of the display adapters back to being directly plugged into the laptop.
***** The miracle happened *******
No more blinking. So from this observation I’m assuming that there is a device conflict when 2 display adapters are being used on the same USB host controller. I think this is a defect and should be corrected. I can work with your tech support to provide further information or to beta test a fix.