X2 fiber optic transceiver module is used in datacom optical links only (not telecom), and they are smaller than old generation XENPAK transceiver. Its electrical interface to the host board is also standardized and is called XAUI (4 x 3.125 Gb/s). 

Sopto is a professional manufacturer and supplier for good quality and the cheapest X2 transceivers Products. Sopto manufactures 300m, 10km, 20km, 40km, 80km X2 optical modules including compatible Cisco X2, HP X2, DWDM X2, CWDM X 2, CWDM XENPAK. All our fiber transceiver modules support Digital Optical Monitoring (DOM) function.

• 
  SPT-2DXXTG-40D 10Gb/s DWDM X2 ER Transponder

  10G 1260~1600nm 40km DDM DWDM X2 Fiber Optic Transceiver Module. Our 10G 1260~1600nm 40km DDM DWDM X2 Fiber Optic Transceiver Module products have a competitive price and quality.

  Contact Supplier