:?: I just installed a WUSB54G V4 adapter on one of my PCs last week. After a number of days I found that the Linksys monitor does not work on Windows XP (confirmed with Linksys support today). When I got the adapter working I found that it will only connect if I have the router set to broadcast the SSID. The rest of my wireless connections work fine with SSID broadcast turned off (one is Orinoco - 802.11B, the other two are ThinkPads with builtin Intel wireless - one with 802.11B and one that is 802.11B/G). My router is a Linksys BEFW11S4 V2 (802.11B). Support had me change the RTS and the Frame threshold down to 2034. This did not resolve the problem. I also chenged the beacon to 50. The router is at firmware version 1.45z. Any other suggestions before I send this back? Thanks. :cry: BTW, I am running Windows XP Prof SP2. Linksys support asked if I installed the latest driver but could not tell me what that might be. All I could find on the US site was V 188.8.131.52. I did see a post in this forum that the Linksys international site has a new driver. One of the posts indicated that the throughput was worse with this driver.