Xiaomi Mi Router 4 is a $60 AC1200 Router with Three Gigabit Ethernet Ports

Xiaomi Mi Router 3 AC1200 router based on Mediatek MT7620A processor was launched in 2016 for just under $40 on online retailers. It had at least one caveat however, since it only supported Fast Ethernet.

The company has now launched an upgraded version – Xiaomi Mi Router 4 -, still an AC1200 router, but equipped with a faster Mediatek MT7621A processor, and three Gigabit Ethernet ports. The new router sells for 199 RMB ($31 US) in China, but it’s also found for under $60 including international shipping on sites like Banggood or GearBest.

Xiaomi Mi Router 4Mi Router 4 (Miwifi 4) specifications:

  • WiSoC – Mediatek MT7621A dual core MIPS processor @ 880MHz
  • System Memory – 128 MB DDR3-1200
  • Storage – 128 MB SLC NAND Flash
  • Wi-Fi
    • 2.4GHz – 2X2  MIMO up to 300Mbps
    • 5GHz – 2X2  MIMO up to 867 Mbps
    • Wireless Security – WPA-PSK/WPA2-PSK encryption, wireless access control (black and white list), SSID hiding, Intelligent Protect network
    • 4x external antennas
  • Ethernet – 2x Gigabit Ethernet (LAN), 1x Gigabit Ethernet (WAN)
  • USB – 1x USB 2.0 host port for external mass storage or 3GB dongle
  • Misc – 3x LEDs, reset button, MiNET button, reset pinhole
  • Power – 12V/1A (12W max)
  • Dimensions – 200 x 178 x 26.3mm (a bit larger than MiWiFi 3)
  • Weight – 550 grams

The USB port is however gone, so you can’t add external storage or a 3G/4G dongle.

Xiaomi Router Gigabit EthernetThe router ships with a power adapter, and can be managed with Xiaomi MiWiFi app for Android or iOS.  If you are like me, you may not have ever heard about MiNET,  and dedicated button is used to easily connect – i.e. without password – Xiaomi and Mijia smart home products using MIOT fast Wi-Fi connection protocol.

Since Xiaomi Mi Router 3 supports OpenWrt, Mi Router 4 may eventually support it, but bear in mind that it may require hardware hacks, if you forget to interrupt the boot the very first time as I discovered during my quick review of Xiaomi Mi Router 3, as the serial console will be disable afterwards.

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10 Replies to “Xiaomi Mi Router 4 is a $60 AC1200 Router with Three Gigabit Ethernet Ports”

  1. I’m not sure where from you get the specs but the USB port should be hidden very well 🙂 Seems like downgrade for me from the cheaper Mi Router 3G which has a USB 3.0 port alongside with 256 MB RAM and working (not sure how stable) LEDE ROM.

    1. Yeah, Mi Router 3G works fine with OpenWRT/LEDE with the exception of USB 3 and Crypto accelerator. That was 3 months ago.

  2. After the latest news about hardcoded backdoors and botnets, I recommend not to trust any commercial router anymore. Buy standard hardware, and build your own, using open source software.

    1. You’re aware that the MTK firmware that Xiaomi is using is based on open source Linux, right?
      Open source doesn’t mean safe.

  3. Did anyone try this on gigabit? It works fine when you connect your computer to a lan port but on wireless it fails to pass (or even reach) 100Mbps

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