The XG-6 and XG-16 are both priced the same at 599.
XG-6 has POE.
XG-16 does not but has 10 more ports?
If you didn't need 10G POE why would you purchase the XG-6 over the XG-16? Not trolling just trying to understand positioning.
The other big difference between the XG-6P and every other UniFi switch is that the copper ports are 802.3bt PoE. That's super high power (up to 60 watts per port) capability. It was designed primarily to power the high power XG UAPs that need both 10Gb connections and bt power. It can of course power smaller PoE devices, or ones that don't need PoE at all. But if you just need basic at/af PoE or only 1Gb connections you can use the XG-6P, but you are spending a lot of money for some things you won't be using...
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Tuesday - last edited Tuesday
The 6port also has multi-gig, AKA Nbase-T.
So if you want 2.5gbe, or 5gbe the 6 port will do that if you have a NIC on the other end that can.
IMO the 6 port unit would be great for powering the UAP-AC-XG.
So ya, the 6 port has Nbase-T (AKA 2.5g and 5g support) and 802.3bt power support.