Cheapest that works
802.3at PoE+ injector
IEEE 802.3at PoE+, Class 4, into LAN IN. Active injector, not passive.
The Trio C60 runs from a PoE+ port or injector, and PoE+ is what gives it full features.
Search this on AmazonConference rooms / Poly
No barrel adapter. Powered over Ethernet from a PoE or PoE+ port, or Poly's AC power kit: 802.3at midspan injector, mains cord and Ethernet cable.
Verified November 2026
You need: 85X03AA#ABA, which replaces the discontinued Poly 2200-86680-001
You need: 2200-86680-102
Searching only for the old Poly number 2200-86680-001: it's listed as discontinued, and the HP 85X03AA#ABA is its replacement.