Hi all, I have a 3640 router and Ethernet module loaded in the system. The router recognises as E0/0 and E0/1. when I try to plug in my WIC - 2 A/S card, the system is not recognizing the serial card. The same card is working in 26xx router. I went into cisco site and found that the cards are interchangeable. The IOS version is 12.0 in 3640 router. Did anybody faced this problem earlier. Any insight? Thanks Rajesh Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=5583&t=5583 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]