Mi Router 4A

  • High-Speed Dual Band AC1200 Router
  • 4 external antennas
  • Large 64 MB memory for stable connection of 64 devices*
  • *Integrated access to 2.4GHz Wi-Fi/5GHz Wi-Fi/LAN for 64 devices under test conditions
  • Control remotely via app
  • Unauthorized access prevention
  • Parental Control
  • 6 MONTHS Warranty
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Hardware configuration

Product colour:
MT7621A MIPS Dual Core 880MHz
Product memory:
2.4G Wi-Fi:
2×2 (Supports IEEE 802.11n protocol, up to a maximum speed of 300 Mbps)
5G Wi-Fi:
2×2 (Supports IEEE 802.11ac protocol, up to a maximum speed of 867 Mbps)
4 external omni-directional high-gain antennas (2× 2.4G with maximum gain of 5 dBi,2× 5G with maximum gain of 6 dBi)
Passive cooling
Product ports:
2× 10/100/1000Mbps adaptive WAN port (Auto MDI/MDIX)
1× 10/100/1000Mbps adaptive LAN ports (Auto MDI/MDIX)
LED indicator:

Protocol standards:
IEEE 802.11a/b/g/n/ac,
IEEE 802.3/3u/3ab
System reset button:

Power supply port:

Wireless specifications

Dual band 2.4GHz and 5GHz
Modulation 11b:DSSS:DBPSK (1 Mbps), DQPSK (2 Mbps), CCK (5,5/11 Mbps)

11a/g:OFDM:BPSK (6/9 Mbps), QPSK (12/18 Mbps), 16QAM (24/36 Mbps), 64QAM (48/54 Mbps)

11n:MIMO-OFDM:BPSK, QPSK, 16QAM, 64QAM. Rate set: MCS0-MCS15

11ac:MIMO-OFDM:BPSK, QPSK, 16QAM, 64QAM, 256QAM. Rate set: MSC0-MCS9 (supports 2 streams)

11ax:MIMO-OFDM:BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM. Rate set: MCS0-MCS11 (supports 2 streams)

Software parameters

Operating system: OpenWRT widely customisable intelligent router operating system MiWiFi ROM
Wireless security: WPA-PSK/WPA-PSK2 encryption, wireless access control (black and white lists), SSID hiding, smart anti-hacking protection
Manage applications: Web support, Android, IOS


User Manual1×
Power supply(12V/1A) ×1

Operating environment

Operating environment temperature
Operating humidity
10%–90% RH (non-condensing)
Storage temperature
Storage humidity
5%–90% RH (non-condensing)

Package contents

Main unit

User Manual

Power cable

Customer Reviews