Lot of (4) Cisco WIC-1DSU-56K - 1 PORT Modem 4-Wire 56/64k Interface Cards

Patton 1092RC High Speed 2-Wire Synchronous Asynchronous Rack Mount Modem Card

Cisco HWIC-16A 16 Port Asynchronous High Speed WAN Interface Router Card

ONE Cisco HWIC-8A 8-Port Asynchronous High Speed WAN Interface Card HWIC 8A

PE 1092RC High Speed, 2-wire synchronous asynchronous Printed Circuit Board

Patton Electronics Co. 2020RC Interface Converter Rack Mount Card