What is the Mikrotik CRS125-24G-1S-RM?
The Mikrotik CRS125-24G-1S-RM is a SFP optical transceiver module, listed by the manufacturer as "24x Gigabit Ethernet layer 3 Smart Switch, 1x SFP cage, LCD, 600MHz CPU, 128MB RAM, 1U rackmount, RouterOS L5". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.