The WUSB11 v2.8 works for me. I found a list of compatible adapters at www.Tivo.com under the Support section. There is a tab listed "Network", then " Which Network Adapters Work with My Series2 DVR?" takes you to a list. When you get to that page, click on "view all adapters" for the complete list. Wow, I can't believe I was able to give advise.