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Looking for something like "10gtek-sfp-dac-twinax-cable-0-5m-passive-compatible-with-ubiquiti-es-48-es-16-xg-usw-pro-24-48-poe"? Here are the closest matches:
Macroreer 10G SFP+ DAC Twinax Cable, Passive Direct Attach Copper SFP Cable, Compatible with Ubiquiti UniFi UC-DAC-SFP+ ES-48/ES-16-XG, 0.5-Meter
10Gtek SFP+ DAC Twinax Cable, Passive, Compatible with Intel XDACBL2M, 2 Meter(6.5ft)
10Gtek SFP+ DAC Twinax Cable, Passive, Compatible with Mikrotik S+DA0000.5, 0.5 Meter(1.6ft)