40G QSFP+ Active Optic Cables (AOCs) are direct-attach fiber assemblies with QSFP+ connectors, compliant with the QSFP MSA, 40G Ethernet IEEE 802.3ba 40GBASE-SR4, and InfiniBand SDR/DDR/QDR standards. They are suitable for short distances and offer a cost-effective solution to connect within racks and across adjacent racks. The 40G QSFP+ AOC is an assembly of 4 full-duplex lanes and each lane is capable of transmitting data at rates up to 10.3Gb/s, providing an aggregated rate of 41.2Gb/s. The length is up to 300 meters using OM3 MMF.