Cheapest that works
802.3at PoE+ injector
IEEE 802.3at PoE into the network port. Active injector, not passive.
The E550 is built for 802.3at PoE, so a standard injector replaces the Poly brick.
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Power Supply for Polycom Edge E550: 48V 0.52A Adapter
External 25W 48V AC adapter with detachable mains cord, or PoE from the network port
Verified November 2026
Which one do you have?
You need: 86P04AA#ABA (older Poly number 2200-49760-001)
You need: 86P04AA#ABB
You need: No adapter needed
- Device end
- Poly phone DC jack; size not confirmed
- Wall end
- Regional mains cord
- Voltage
- 48V DC
- Current
- 0.52A
Polarity not confirmed. Read the label on your item.
The usual mistake
Assuming the phone came with an adapter: E550 PoE builds ship without one, so a PoE-less desk leaves it dark.