Product UPC: 012304373131 Cisco Third-Generation 4-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card - Expansion module - EHWIC - 4 ports - T-1/E-1 - for Cisco 2911, 2921, 2951, 3925, 3925E, 3945, 3945E
30 Day Warranty Included. Extended warranty is available. Contact your sales rep for more information.