Brand: Brocade Part Number: 57-1000477-01 Form Type: QSFP Speed: 40GBase Reach: 10km Wavelength: 1310nm Transceiver Type: LR4 MPO:MPO Media: MMF PSM4: PMS4 Speed Description: 4X10GGigabit Environment: 0 to 70C Country of origin: CHINA In addition to Brocade 57-1000477-01, Liyuan Tech supply a wide range of other Brocade transceiver transceivers. If you have any need or interest, please feel free to send inquiry to global@chn-liyuan.com