Upgrading to 40G QSFP (Quad Small Form Factor Pluggable) technology is made even easier with our QSFP and QSFP+ cables. 40 Gigabit is the new standard for Fibre Channel, Gig Ethernet, Infiniband, SONET, and SAS (Serial Attached SCSI) interconnects. Copper QSFP cables are in stock for lengths of up to 7 meters. If you need to conenct newer 40GbE QSFP hardware to legacy CX4 10GbE equipment, then please select our hybrid QSFP to CX4 cables below. Each cable is carefully tested prior to packaging and includes our standard lifetime warranty.