Fiber optic transceiver in Mini-GBIC or SFP format. For ethernet cables with RJ45 connector. Compatible with most brands. Specs: - Compatible connectors: RJ45 - Transmission speeds: 10/100/1000/10000 Mbps - Maximum distance: up to 30m at 10Gbps or 100m at 1Gbps - Compatible with SFP MSA and SFF-8472