Reddit reviews SFP+ DAC Twinax Cable, Passive, Compatible with Ubiquiti ES-48/ES-16-XG/USW-Pro-24-POE/USW-Pro-48-POE/US‑16‑XG/US‑48, 0.5 Meter(1.6ft)
We found 5 Reddit comments about SFP+ DAC Twinax Cable, Passive, Compatible with Ubiquiti ES-48/ES-16-XG/USW-Pro-24-POE/USW-Pro-48-POE/US‑16‑XG/US‑48, 0.5 Meter(1.6ft). Here are the top ones, ranked by their Reddit score.
10GBase-CU, 0.5 meter2-pair differential twinax cable, PassiveEEPROM I2CCompatible with Ubiquiti ES-48/ES-16-XG/USW-Pro-24-POE/USW-Pro-48-POE/US‑16‑XG/US‑4810Gtek's automatic assembly line, assures the consistency of manufacture under the process of laser cutting, aluminum shielding stripping, isolator stripping, automatic reshaping, automatic soldering and ultraviolet ray curing. Each DAC cables take the TDR & VNA measurement, guaranteeing passing the signal integrity test.
Thanks :)
No cloudkey—I'm hosting the unifi controller in an LXC container on the SYS-5028D-TN4T server at frame right. I've considered switching to a cloudkey and probably will at some point, but keeping things in the LXC container has some advantages (especially with backups, since I can take advantage of LXC + ZFS and do snapshot replication).
Transceivers are Ubiquiti-branded ones off of Amazon—seemed the safest choice.
The DACs are all 10Gtek (the ubiquiti-compatible ones). I would have preferred to stick with DACs for everything, but those two ports connect to a couple of Windows PCs on the other side of the room and it was simpler and easier to get fiber over to them.
Typically these are for connecting switches together without using up one of the regular copper switch ports. Potentially over longer distances than 1GbaseT can support (>100M)
They're basically like any other switch port, however they will require compatible optics or for short runs, a DAC cable like this one can be used.
I have a UDM-pro that will be connected to a US-16-150W via this DAC:
https://www.amazon.com/gp/product/B06XHF7JSG/
BUT per ubiquiti neither auto-negotiation works nor does it respect manually setting the link speed on the UDM end:
https://community.ui.com/questions/DAC-not-recognized-on-UDM-Pro/7e9d495e-f7a5-4f92-941d-6c22763a03b7#answer/ba29de99-4b4e-4c70-91e1-b24ad9dabc3c
>Link speed selection doesn't work on UDM Pro yet and auto mode sets 10G for DAC. That's why it doesn't work with the switch which has 1G enforced
I have a similar setup with an ER-X SFP and an ES 24 Lite, except I'm using a DAC cable like this. On the ER-X main screen, you should have a switch0. Go into the config for that and make sure eth5 is checked. For speed, I have the port on the ER-X set to "Auto negotiation" and the port on the ES set to "Auto-detect", and they negotiate to 1Gb.
I'm using this to go from my USG-PRO-4 to a US-24-250W
https://www.amazon.com/dp/B06XHF7JSG/ref=cm_sw_r_cp_apa_i_eQjZCb6VNWZ8R
They are both plain SFP ports but this cable works great. Didn't have to configure anything!