The listing, Cisco 1 port 4 wire 56-/64- kbps CSU/DSU wan interface card has ended.
BNIP
Added an actual pic of item I have in package.
Product: 56K CSU/DSU WAN Interface CardConnector Type: RJ-48S (uses straight through RJ-45 cable)Supports DDS Loop Rates: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps.Compatible Carrier Module: NM-2W, NM-1E2W, NM-1E1R2W, NM-2E2W, NM-1FE2W, NM-1FE1R2W, NM-2FE2W,Supported Routers: Cisco 1600, 1720, 2600, 2691, 2600XM, 3620, 3640, 3631, 3660, 3725 and, 3745Manufacturer: Cisco