LightSpeed™ DACs are a low-cost way to utilize the SFP ports on our fiber optic products and standard 1G network equipment. DACs (Direct Attach Cables) are a great solution for in-rack or other short connections that would otherwise require fiber optic cabling. Nexus is Dyrholm Audio's new flagship series. Developed without compromise and with full focus on maximum signal integrity, stability, and musicality. Each Nexus cable is the result of long-term development, extensive listening tests, and extreme precision in the selection of materials and. 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. With the features of the low cost, low power consumption and low latency, it is an alternative to optical transceivers for short reach links in high-speed interconnect applications such as Data Center, HPC and enterprise network. 1G SFP to SFP DAC Twinax Cable available in 0. It strikes a balance between performance, cost, and maturity, making it an attractive option for servers, storage, and switches. But the choice of cable for 10G links is.