1Gb SFP DAC Cable for High-Speed Connectivity This Passive Direct Attach Copper SFP to SFP Cable supports data rates up to 1. FS DAC, AOC and AEC cables are most used in data centers and enterprise networks for switches, servers, and storage interconnects within a rack. With high-speed, high-reliability transmission, FS twinax cables come in different lengths to support different transmission data rates, such as 1G, 10G. Direct Attach Copper (DAC) cables are factory-terminated twinax assemblies that integrate transceiver-style connectors such as SFP/SFP+, SFP28, QSFP+, QSFP28, QSFP-DD and OSFP at both ends, creating a cost-effective, zero-power electrical link for short-reach, high-speed networks. 0 meter lengths Login for Dealer pricing.