StarTech.com Juniper SFP-GE40KT15R13 Compatible SFP Module - 1000BASE-BX-D - 1 GbE Gigabit Ethernet BiDi Fiber (SMF) - Juniper SFP-GE40KT15R13 Compatible Transceiver - 1000BASE-BX WDM SFP+ (1 Gbps) - 1 Gigabit BiDi Module - 1550nmTX/1310nmRX Single Mode (SMF) - 40km (24.8mi) - LC Connector & DDM - Hot-Swappable / MSA Compliant - Lifetime Warranty