That is QSFP+ Passive Copper addition to strength

Movement to QSFP+ Passive Copper and XFP show density in the datacenter on the rise! 10/100 Gbps are making inroads, particularly within the rack and across the datacenter. Long range 40Gbps is 4 trunked 10 Ge links, either MO4 fiber or extended range out to  Meters - that’s 1.86 miles. QSFP (Quad Small Form-factor Pluggable) allows 2x 10Ge fiber connections (fiber count of 4) connections in a single plug switch-side with a split tail host-side. That is 1 cable for 2x 10Ge drops from host to switch.  That just cut a typical cabling load in the rack in 1/2.  Choose QSFP+ Passive Copper for even more affordable cabling! Did someone say 10Gbps over copper? Boy, the photons must be getting scared. For another reference  The QSFP+ Passive Copper also contains a two-colored LED indicator that displays the operating status of the module.The QSFP+ Passive Copper electrical loopback adds another solution for test engineers in both manufacturing and development environments said Mike Reiling, key account manager.The addition of the QSFP+ Passive Copper to our XFP, SFP and SFP+ electrical loopbacks has strengthened our commitment to economical board testing as well as full system testing using our Armadillo optical loopbacks.