FOR 1pcs WIC-1T Router Interface Module — 1-Port WAN Serial Interface Card for 2621XM / 1841 / 2811 (Server Array Card)

Single-unit WIC-1T router interface module providing a 1-port WAN serial interface. Supplied as FOR 1pcs, this serial module installs into compatible routers to add one WAN connection. Compatible models: 2621XM, 1841, 2811. Functions as a router interface card / server array card to extend serial WAN connectivity on supported hardware.