QSFP+ transceivers are made to support Serial Attached

Support for the Cisco quality identification (ID) feature which helps a Cisco switch to identify if the module is certified and tested by Cisco.The QSFP+ transceiver link length for either 40 Gigabit Ethernet or high density 10 Gigabit Ethernet application can be 100 m using OM3 fiber or 150 m using OM4 fiber. These modules are designed to operate over multimode fiber systems utilizing a nominal wavelength of 850nm. The electrical interface uses a 38 contact edge type connector. The optical interface uses an 8 or 12 fiber MTP (MPO) connector.
The 40G QSFP+ transceiver module is a hot-swappable, integrates 4 independent 10 gigabit per second data lanes in every direction to supply 40Gbps aggregate bandwidth. 40GBASE QSFP+ modules offer customers a multitude of high-density 40 Gigabit Ethernet connectivity choices for data center, high-performance computing networks, enterprise core and distribution layers, and service provider transport applications. The QSFP+ transceiver module connects the electrical circuitry of the system with whether copper or perhaps an optical external network. The transceiver is used primarily in a nutshell reach applications in switches, routers, and data center equipment where it provides higher density than SFP+ modules.The QSFP+ specification supports Ethernet, Fiber Channel, InfiniBand and SONET/SDH standards with various data rate options. QSFP+ transceivers are made to support Serial Attached SCSI, 40G Ethernet, 20G/40G Infiniband, and other communications standards. QSFP modules boost the port-density by nearly 3x when compared to SFP module. The QSFP transceiver include 40GBASE-SR4 and 40GBASE-LR4 for various applications.