I understand that htis might be somewhat "obscure" Hardware but it is really annoying. I tried using a Chipcon (now) Evaluation kit for their RF transceivers and which connects via USB to the PC. http://www.chipcon.com/files/CC2420_ZigBee_DK_User_Manual_1_0.pdf I was able to install drivers under Parallels (4128), but whenver I run their included packetsniffer applicaton I get a BSOD with "BUGCODE_USB_DRIVER" Parallels wonky USB support is really a bit annoying when doing embedded development (If you search this forums you'll see that I also whined about bad JTAG adapter support). I'd really appreciate stable USB support for devices besides mass storage. Ok some information from Apples System profiler: Code: CC2400EB: Version: 24.20 Bus-Strom (mA): 500 Geschwindigkeit: Bis zu 12 MBit/s Hersteller: Chipcon Produkt-ID: 0xeb11 Hersteller-ID: 0x11a0 Find USBProber information in attached screenshot. The board uses an Cypress EZ-USB FX for USB connectivity if that is of any relevance. Any ideas how I can get this to work?