10Gtek 10/100/1000Base-T SFP RJ45 Compatible for Cisco GLC-T(10/100/1000M)

10Gtek 10/100/1000Base-T SFP RJ45 Module - Auto-Negotiation Copper Mini-Gbic Transceiver Compatible for Cisco GLC-T(10/100/1000M)/ SFP-GE-T(10/100/1000M), Mikrotik S-RJ01. Distance 30 m 300 m 10 km 100 m 550m 20km.

eBay