FIBERSTAMP 40G QSFP+ PSM4 optical transceiver module is designed for medium to long-distance interconnections in data centers. It is compliant with the 40G Ethernet transmission protocol and offers an optional dual-rate version for 40GE/OTU3. This series of products utilizes 4 pairs of parallel single-mode fibers for transmission, with a center wavelength of 1310nm. The maximum transmission distance can reach 2km or 10km, depending on the specific model.