QSFP+ Direct Attach Cable
QSFP+ stands for "Quad Small Form-factor Pluggable" and is designed for 40 Gigabit Ethernet over four channels at 10 Gb/s each. Its size is approximately the same as an XFP. The connector type is LC duplex for singlemode and the LM4 version, as well as 12-fiber MPO for multimode SR4.