Same Wi-Fi. The MR600 costs noticeably more - for gigabit ports and full-speed cable connections.

Short answer

Archer MR600 - gigabit WAN and 3 LAN. Archer MR400 - 100 Mbit/s ports and cheaper.

Key differences

SpecTP-Link Archer MR400TP-Link Archer MR600
Type4G LTE router4G LTE router
Wi-FiWi-Fi 5, AC1200Wi-Fi 5, AC1200
Wi-Fi speed300 + 867 Mbit/s300 + 867 Mbit/s
Bands2.4 + 5 GHz2.4 + 5 GHz
WAN1 × 100 Mbit/s + SIM1 × 1 Gbit/s + SIM
LAN3 × 100 Mbit/s3 × 1 Gbit/s
4G LTEbuilt-inbuilt-in
Antennasexternal + internal2 external
Dimensions, weight202×141×33.6 mm229×160×37 mm
Pricecurrent pricescurrent prices

Specs come from the device pages on Smartphone.ua.

Ports

100 Mbit/s vs 1 Gbit/s on WAN and LAN.

What's the same

AC1200, 2.4 + 5 GHz, built-in 4G LTE.

Who it's for

If you have fibre plus 4G backup - the MR600. If only 4G - the MR400 is enough.

Verdict: who should buy which

  • Cable + 4G backup - TP-Link Archer MR600.
  • 4G only - TP-Link Archer MR400.

FAQ

Is the Wi-Fi the same?
Yes, AC1200.

How many antennas does the MR600 have?
2 external.

Which is cheaper?
The Archer MR400.

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