The only two difference between Tp-Link Archer AX72 AX5400 vs the Pro model AX72 AX5400 is mentioned below. Rest everything is same. Processor is same. Usb 3.0 port is same. Wifi speed is same. Ram is same. Rom size is same. Antenna and shape is same. Both are Wifi 6 Routers.

TP-Link Archer AX72 PRO AX5400TP-Link Archer AX72 AX5400
1× 2.5 Gigabit WAN/LAN Port
1× Gigabit WAN/LAN Port
3× Gigabit LAN Ports
1× Gigabit WAN Port
4× Gigabit LAN Ports
TP-Link Next-Gen Wi-Fi 6 AX5400 Mbps Gigabit Dual Band Wireless Router, OneMesh Supported, Dual-Core CPU,HomeShield, Ideal for Gaming Xbox/PS4/Steam, Plug and Play (Archer AX72), Black
  • Gigabit WiFi for 8K Streaming —— 5400 Mbps WiFi for faster browsing, streamings, and downloading, all at the same time.;Fully Featured Wi-Fi 6 —— Equips with the top structure of 4T4R and HE160 on the 5 GHz band to enable a 4.8 Gbps ultra-fast connection.
  • Connect 100+ Devices§ —— Supports MU-MIMO and OFDMA to reduce congestion and quadruple the average throughput.;Extensive Coverage —— 6× antennas and Beamforming ensure broad coverage.
  • HomeShield —— TP-Link's premium security services keep your home network safe with cutting-edge features for network and IoT protection.;More Vents, Less Heat —— Improved vents area unleashes the full power of the whole machine.
  • USB Sharing —— 1× USB 3.0 port enables easy media sharing and private cloud building;Easy Setup —— Set up the router in minutes with the Tether app.
  • Control Method: Application;Security Protocol: Wpa, Wpa2, Wpa3, Wpa/Wpa2-Enterprise (802.1x)
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Specs similar in AX72 & AX72 Pro Routers:

  • Wifi 6 – 5400 Mbps Speed
  • 5 GHz: 4804 Mbps (802.11ax, HE160)
  • 2.4 GHz: 574 Mbps (802.11ax)
  • 6× Fixed High-Performance Antennas
  • MU-MIMO – 4+4 = 4 Receive + 4 Transmit
  • OFDMA with 100+ devices
  • Lifetime HomeShield inbuilt
  • 1× USB 3.0 port enables easy media sharing and private cloud building.
  • 1 GHz Dual-Core CPU
  • Beamforming + Airtime Fairness

We have covered best wifi 6 routers too if you like to read about few other wifi 6 routers.