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I am looking for an 802.11n 2.4/5GHz USB adapter. I intend to mainly use this for packet captures.

Jon,

What app will you use to do captures? Wireshark? If Wireshark, I think the only one that will do promiscuous captures is their recommended device (http://www.cacetech.com/products/catalog/product_info.php?products_id=69&osCsid=3400e31833f818a05fa6f851ba4e8015)

A little pricey at $698, but it is the recommended USB adapter for Wireshark.

(maybe someone knows of another one out there--for less $$?)

network monitor 3.3. Yeah, I know it's microsoft but I can do multiple adapter packet captures. I use airmagnet higher level troubleshooting, but sometimes I need to see the packets and I mean all of them.

Take a look at this link: http://www.itweb.co.za/visualstudio/index.php?option=com_ninjaboard&view=topic&topic=11067&Itemid=2

Says (down the thread....) that net mon 3.3 only supports monitor mode in a/b/g. There is a list here of approved adapters that have passed the Windows logo test. But it is a long list.

Yeah, I've kind of wondered about that. I think I am either going to go with the Ubiquiti SR71-USB or the DLINK DWA-160 as they are also supported on Airmagnet VoFi Analyzer, which does support multiple adapters. Then I can see about some of the other options out there. Thanks for the post, good to know.