The ENET 40G-QSFP-QSFP-C-0101-ENC 40GBASE-CR4 1 meter QFP+ to QSFP+ Direct-Attach Cable (DAC) is specifically programmed to be fully compatibility and seamlessly connect Brocade devices to Brocade devices. Every Cross-compatible and OEM compatible Direct-Attach Cable (DAC) product is individually programmed and tested in-house for guaranteed functionality and seamless integration. Our test lab utilizes the latest network switches, servers and routers for compatibility testing as well as industry leading traffic simulation equipment for functionality testing. ENET offers more than 1,000 10G and 40G cross-compatible and OEM compatible direct-attach cable solutions. 40GBASE-CR4 QSFP+ to QSFP+ Direct-Attach Active Cable Assembly 1 meter