What is the Telco TMC-250P?
The Telco TMC-250P is a SFP optical transceiver module, listed by the manufacturer as "T-Marc Ethernet demarcation gateway with 4x100 Base TX, 1 Gbit un-pop SFP, 1G Base T ports". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.