After-sales Service: 30-day free return, 3-year warranty, lifetime technology support. We offer many compatible options, If you are not sure about the compatibility of your device, please feel free to email us. QSFPTEK is a manufacturer of SFP module, customized service is available. 100% high quality products: We always strictly control product quality, every module had been individually tested on switches before shipping, customers can rest assured to buy. Easy to use: Plug and play, hot-pluggable. DDM support: DDM allows you to monitor the critical information, to find out some potential problems. Widely used in fiber switches, routers, NIC, server or other fiber optic equipments with 40Gb QSFP+ ports. 40G QSFP+ Multi-Mode Transceivers: 40Gb/s data rate, MPO/MTP connector, 850nm Wavelength, the transmission distance up to 150m, working temperature: 0? ~ +70?, Tx Power(dBm): -7 ~ +1, Rx Sens.(dBm): < -9.5. Wide Compatibility: Compatible for Dell (DE) Networking 430-4593/407-BBOI. 40G Ethernet, Infiniband QDR, SATA/SAS3, IEEE 802.3ba standard, MSA Compliant.