After purchasing the WPC54G v2, I was disappointed to notice that it evidently doesn't support AES. I'm using the Linksys Network Monitor v2.1 (also tried Funk Odyssey), and driver v18.104.22.168. Linksys' website has the product data sheet for this card, which lists security as: WEP, AES, TKIP, 802.1x. The user guide, that came with the card, as well as the user guide posted to the website, speaks about AES as a selection. And the Network Monitor application, prompts you to choose, "from either TKIP or AES," only that AES is not listed in the drop down list. From my reading posts, it appears that v2 doesn't support AES, while some other WPC54G versions do. The problem is that Linksys makes it very unlikely that you'll realize this before purchasing the card. Between their website, userguide, software, as well as all their retail channel partners listing AES as a supported protocol, you're destined to purchase the card and be disappointed once you attempt to configure AES.