This Cisco SG500-52MP-K9-NA Ethernet switch is a high-performance, fully managed device with 50 LAN ports and Fast Ethernet (100-Mbit/s) technology. It is a rack mountable switch that uses Ethernet (RJ-45) and SFP interfaces for network connectivity. The switch is part of the Cisco ACE product line and is a great choice for enterprise networking, servers, and switches & hubs. With its refurbished state, it is a cost-effective option for businesses that need a reliable and efficient switch.
eBay