The Ubiquiti UACC-Uplink-SFP28-3M, part of the UniFi Uplink Cable series released in 2024, is a passive twinax direct attach copper (DAC) cable designed for reliable, high-bandwidth connections between UniFi switches, gateways, and other SFP-enabled devices in data centers or enterprise setups.

Measuring 3 meters (9.84 ft) with SFP28 connectors on both ends, it supports multi-rate operation at 1 Gbps (SFP), 10 Gbps (SFP+), and 25 Gbps (SFP28) through auto-optimization for link speed and stability, ensuring plug-and-play compatibility without manual configuration. Its slim PVC jacket (3 mm outer diameter) in white offers a 20 mm bend radius for easy routing in tight spaces, with low insertion loss for minimal signal degradation over distance.

Weighing approximately 100 g, it's a cost-effective alternative to fiber for short-range uplinks up to 25G, backward compatible with older SFP/SFP+ ports, and optimized for UniFi ecosystems like USW-Pro-Max switches.

Strengths include its versatility for mixed-speed networks and zero-power consumption (passive design), but it's limited to copper DAC (not optical) and shorter lengths—perfect for rack-to-rack links in scalable UniFi deployments without latency spikes.