JD119BST Compatible LC Single Mode Transceiver Module, Full Duplex. The JD119BST is an HP JD119B compatible fiber transceiver module that has been designed, programmed and tested to work with HP brand switches and routers. It delivers dependable 10 GbE connectivity over fiber cable, for 1000BASE-LX compliant networks, with a maximum distance of up to 10 km (6.2 mi).