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The UC-DAC-SFP+ is a 0.5 m direct attach copper cable with SFP+ connectors on both ends, built for 10 Gb/s links between UniFi switches, routers and servers. It is a passive DAC, so it carries no optics and draws no meaningful power, which makes it cheaper and cooler than two 10G SFP+ transceivers plus a fiber run over this short distance. The 30 AWG conductor keeps it thin and flexible for rack patching. It suits homelab and small-office racks where gear sits within half a meter; for longer runs or runs past roughly 7 m, fiber or active DACs are the better fit.
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Lowest price we've seen: $32.67 on Nov 11 at Newegg. Tracked across 2 stores since Nov 11.
Owners of UniFi and mixed 10G gear generally report these cables link up at 10 Gb/s with no configuration and stay reliable in racks. Complaints center on length and on compatibility with non-Ubiquiti SFP+ ports.
The Ubiquiti UniFi UC-DAC-SFP+ is a 0.5 m (1.6 ft) SFP+ direct attach copper (DAC) patch cable. It supports data rates of 10 Gb/s and uses 30 AWG wire.
The cable has a round design with a gray PVC sheath. Both ends have male contacts, and the connectors are not angled. It is not shielded and is not a crossover cable.