The Cisco QSFP-H40G-ACU7M 40GBASE QSFP (Quad Small Form-Factor Pluggable) copper direct-attach 40GBASE-CR cables offers a very cost effective way to establish a low-power 40 Gigabit Ethernet connectivity options for data center, high-performance computing networks, enterprise core and distribution layers, and service provider applications. This 7 meter length of Active cable offers alternative way to connect 40G link between QSFP ports of Cisco switch within racks and across adjacent racks.