QSFP+ A0C have advantages over direct attach copper

 Additionally, compared with Direct attached cable, Active Optical Cable has about a quarter of the weight and a smaller cable diameter, and offers a minimum cable bending radius of only 30mm (much better than Direct attached cable).but use optical fiber ‘between the connectors’ with electrical-to-optical conversion on the cable ends that improves speed and the link distance of the cables without sacrificing compatibility with standard electrical interfaces.SFP+ to QSFP+ AOC cables available in standard lengths up to 300.0m, that is to say QSFP+ AOC is longer reach than copper and multi-mode fiber solutions (100.0m typically), enabling deployment in data center and campus environments.Consequently, an aggregate data rate of 40Gbps over 100 meters transmission can be achieved by this product, to support the ultra-fast computing data exchange.AOC is designed with form factor, optical/electrical connection according to the QSFP Multi- Source Agreement.Available in fibre terminal module QSFP+ A0C, fiber optic transceiver is typically used to connect from beyond the 7m switch. LightCounting predicted that 2012 will be shipped 6 million 10G SFP+SR and LR optical transceiver