Arista Networks® CAB-Q-S-0.5M compatible 40GBase-CU QSFP+ to 4xSFP+ transceiver (twinax DAC, 0.5m, passive). A 100% Arista Networks® compatible 40GBase-CU QSFP+ to 4xSFP+ twinax direct attached cable that opperates over passive copper, with a maximum reach of 0.50m (1.64ft). This Arista Networks® twinax cable is 100% compliant with its designed networking application, and is factory programed with Arista Networks® specific configuration data required for seamless networking integration. This passive twinax cable will initialize and perform identically to Arista Networks' cable and is built to meet or exceed Arista Networks' specifications, and comply with MSA (Multi-Source Agreement) standards. The actual part shipped may have a different part number, but will be functionally identical and 100% compatible. Trade Agreements Act (TAA) versions of this part are available.