Same ports. The X20 costs noticeably more - for Wi-Fi 6 and faster 5 GHz.

Short answer

Deco X20 - Wi-Fi 6 AX1800: 574 + 1201 Mbit/s, a compact cube. Deco M4 - Wi-Fi 5 and cheaper.

Key differences

SpecTP-Link Deco M4TP-Link Deco X20
Typemesh systemmesh system
Wi-FiWi-Fi 5, AC1200Wi-Fi 6, AX1800
Wi-Fi speed300 + 867 Mbit/s574 + 1201 Mbit/s
Bands2.4 + 5 GHz2.4 + 5 GHz
WANWAN/LAN 1 Gbit/sWAN/LAN 1 Gbit/s
LAN2 × 1 Gbit/s (WAN/LAN)2 × 1 Gbit/s (WAN/LAN)
Antennasinternalinternal
MeshDeco MeshDeco Mesh
Dimensions, weight190×90 mm, 365 g110×110×114 mm
Pricecurrent pricescurrent prices

Specs come from the device pages on Smartphone.ua.

Wi-Fi

300 + 867 vs 574 + 1201 Mbit/s.

What's the same

2 gigabit WAN/LAN ports each, internal antennas, Deco Mesh.

Body

A 190×90 mm cylinder vs a 110×110×114 mm cube.

Verdict: who should buy which

  • Wi-Fi 6 - TP-Link Deco X20.
  • Saving money - TP-Link Deco M4.

FAQ

Are they compatible?
Yes, both are Deco.

Is there USB?
No.

Which is cheaper?
The Deco M4.

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