1-Port Channelized STM-1/OC-3 Shared Port Adapter Version 2 - Expansion module - HDLC, Frame Relay, SONET/SDH, PPP, MLPPP, MLFR - OC-3c/STM-1 - for ASR 1001, 1001-X, 1002, 1002-F, 1002-X, 1002-X 10G, 1004, 1006, 1013