This product is either discontinued or we cannot get that from suppliers.
Ubiquiti UDC-2, Unifi Direct Attach Copper Cable, Fiber Mode 50 / 125 μm, Duplex, Cable Jacket PVC, Repeatability ≤ 0.1 dB, Durability ≤ 0.2 dB (1000 Times Mating), Return Loss ≤ 50 dB.
The SFP+ passive cable assemblies are high performance, cost effective I/O solutions for 10G Ethernet and 10G Fiber Channel applications. SFP+ copper modules allow hardware manufactures to achieve high port density.