Poly Edge E Extension Module for Edge Series IP Phones
Reviewed 23 August 2026 · price checked live
Check price on Amazon →Overview
PLT Poly Edge E Extension Module for Edge sits in our servers listings, where we rank by how buyers actually rate a product rather than by brand. The manufacturer says: Button Expansion Module for Poly Edge E Series (E400/E450 and E500/E550). Turn your phone into a powerful switching console. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.5 out of 5 from 2 ratings. What that score is worth next to its rivals is set out below.
- Brand
- PLT
- Amazon rating
- 4.5 / 5 from 2 ratings
- vs Servers
- 0.1 above the category median of 4.4
- Rank in category
- 18 of 37 rated servers we track
- Price position
- Towards the top of the range (category spans £7.19 to £2670)
- How proven
- Fewer ratings than most rivals here, so less settled
How it compares in Servers
Across the 37 rated servers products we track, the typical score is 4.4 out of 5. This one sits at 4.5, which is around the middle of the category. Ratings alone will not separate it from its rivals here, so price and the specifics below matter more than the star count.
It carries 2 ratings against a category median of 9. That is a thin base by the standards of this category, so treat the score as provisional: a handful of extra reviews can still move it either way.
On price it sits in the upper third of a category running from £7.19 to £2670, where the midpoint is about £103. Paying above the category norm needs a reason beyond the rating, because the score alone does not justify the gap here.
Worked out from the 50 servers products in our catalogue, not from the brand's own claims. How we rank →
Key features
- Button Expansion Module for Poly Edge E Series (E400/E450 and E500/E550)
- Turn your phone into a powerful switching console
- Scalable expansion with three sides with 22 dedicated keys each - a total of 66 contacts/speed dials per module
- Large, bright 5 inch IPS colour display
- No additional power source required - powered directly from the Poly host phone
- Up to two Poly Edge EM modules possible with E500/E550
