Cisco SFP-10G-BX40U-I Compatible 10G BX SFP+ BIDI TX1270nm/RX1330nm 40km LC SMF DDM Transceiver Module
Cisco SFP-10G-BX40U-I Compatible 10G BX SFP+ BIDI Supports 1270nm DFB and 1330nm PIN into LC connector, which provides 40km link distance over single mode fiber.

