Xiaomi Mi WiFi 3 AC1200 Router Gets 128 MB Storage, Sells for $40 Shipped

The first Xiaomi Mi WiFi router brought the cost of 802.11ac WiFi to the masses, and it is now selling for less than $30 including shipping, but the company has now launched Xiaomi Mi WiFi 3 router with some improvements, including a total of 4 antennas and more storage, and sold on e-retailer such as GearBest and GeekBuying for just under $40.

Xiaomi Mi WiFi 3 router specifications:

  • Wi-Fi SoC – Mediatek MT7620A @ 580MHz
  • System Memory – 128 MB DDR2
  • Storage – 128 MB SLC NAND Flash
  • Wi-Fi
    • Protocols – IEEE 802.11a/b/g/n/ac
    • Transmission Rate – 300Mbps max @ 2.4GHz 2X2  MIMO, 867 Mbps max @ 5GHz 2X2  MIMO
    • Wireless Security – WPA-PSK/WPA2-PSK encryption, wireless access control (black and white list), SSID hiding
    • 2.4 GHz Channels: 1,2,3,4,5,6,7,8,9,10,11,12,13
    • 5 GHz Channels: 149,153,157,161,165
    • 5 GHz DFS (dynamic frequency selection) channels: 36,40,44,48,52,56,60,64;
    • 4x external antennas
  • Ethernet – 2x 10/100M Ethernet (LAN), 1x 10/100M Ethernet (WAN)
  • USB – 1x USB 2.0 host port for external mass storage or 3GB dongle
  • Misc – 3x LEDs, reset button
  • Power – 12V/1A
  • Dimensions – 195 x 131 x 23.5mm
  • Weight – 220 grams

The router runs MiWiFi operating systems with configuration via its web interface, Android or  iOS apps. I understand that the router’s web interface is only in Chinese, but the apps also support English. However, the original router also supports OpenWrt, and considering there aren’t that many differences, the new version should already or soon be supported. You may find more details on the product page in Chinese.

Via AndroidPC.es

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33 Replies to “Xiaomi Mi WiFi 3 AC1200 Router Gets 128 MB Storage, Sells for $40 Shipped”

  1. Help me understand why you’ve got a wireless throughput of up to 867 Mbps and you then cripple that with a wired throughput of 100 Mbps. If I’ve got a Gbps network set up then best case is that my wireless devices are capped at 100 Mbps talking to wired machines and worst case is that this device slows my entire network down to 100 Mbps.

    Are these solely for wireless devices that connect straight to the internet over a connection that’s capped at 100 Mbps ?

  2. @Andrew
    That seems strange at first, but based on my testing with devices capable of 433 Mbps and 867 Mbps transmission rate, the actual transfer performance is lower than 100 Mbit for 433 Mbps, and about equivalent to a 100 Mbps Ethernet connection at 867 Mbps.

    That’s with an AC1750 router located at about 5 meters + wall. In room performance and getting closer to the router should yield better performance. Obviously that for only one device, and if multiple devices are connected to the router, Gigabit Ethernet could provide a performance boost in some use cases. I guess they just wanted to keep the price the lowest possible.

  3. @Marios
    they probably got it wrong, xiaomi’s tec-spec’s have it at 100Mbps, plus the soc only has two RMII interfaces, for gigabit support it’d need an external chip connected via pcie…

  4. @Marios
    If you’ve found this in the “Customer Questions and Answer” section on GearBest, you can safely discard it. I’m always amazed at the number of incorrect answer customer support is giving there. That’s mind boggling how wrong they often are. I think they must toss a coin before answering. Head is 100M, tail is Gigabit.

    Or maybe they are paid by the number of answers.

  5. It seems to be trend, other recent chinese routers for the china market on another well known site are also 10/100 yet all claiming gigabit, they are being sold as though Cat 5e is so so last year, and its our fault for not using wifi, with broadband now getting upwards of 200-300mbit, erm kinda shots itself in the foot.

  6. Do any ‘so called’ 300/867Mbs WiFi routers really deliver sustained throughput in the >100Mbs range? Aren’t they like ‘so called’ 500Mbs Powerline adaptors (also usually sold with 100Mbs connections)? The claimed speeds are seldom anywhere near what they achieve in real-world situations.

  7. SOC can not be 7620A, it must 7621A which dual core. MT7620a is only two radio 802.11n and no 802.11ac

  8. I this were a gigabit router then yeah sure but since it’s not, no thanks. I still care about wired performance and sometimes those 4 gigabit ports come in really handy.

  9. @Harley
    That’s a transcription from Chinese, so the space might not be important. As mentioned in the post, it’s almost the same design as Xiaomi Mi WiFi mini router, so the OpenWrt might just work out of the box. That’s unless the 128MB storage is not supported.

  10. @bernstein
    MT7620A supports up to 5 Fast Ethernet ports and 2 Gigabit Ethernet ports. The difference is that the FE ports include the PHY and gigabit ports don’t. An external gigabit phy nowadays costs less than 1 dollar, but they prefer to ship a deceptive product.

    1. Archer C7 TP-LINK is the cheapest I could find. Not xiaomi cheap though. Some people say it’s good but I have no experience with it.

  11. bernstein :
    @Marios
    they probably got it wrong, xiaomi’s tec-spec’s have it at 100Mbps, plus the soc only has two RMII interfaces, for gigabit support it’d need an external chip connected via pcie…

    Yes, Xiaomi specs say 100Mbps.
    No, the ‘A’ variant of the SoC used in this device has two RGMII interfaces. The ‘N’ variant has an integrated PHYs for 5 fast ethernet ports and no RMIIs.

  12. Andrew :
    Help me understand why you’ve got a wireless throughput of up to 867 Mbps and you then cripple that with a wired throughput of 100 Mbps. If I’ve got a Gbps network set up then best case is that my wireless devices are capped at 100 Mbps talking to wired machines and worst case is that this device slows my entire network down to 100 Mbps.
    Are these solely for wireless devices that connect straight to the internet over a connection that’s capped at 100 Mbps ?

    If you have a wired gigabit network set up, how does this slow your whole network down?

    The obvious use-case is an increasingly common one, most devices are on wireless connections, with an upstream internet connection of 100Mbps or less. The fast ethernet ports support a handful of “legacy” devices. 100Mbps is going to be plenty for a lot of things, like sending or receiving streaming media on a small network.

    Keep in mind too, there is never going to be a perfect match between WiFi and wired data rates, so there is going to be a bottleneck somewhere. Because switched, wired ethernet behaves very deterministically, while wireless is subject to a lot of changing influences both inside (ie connected devices) and outside (other networks, microwave ovens, etc) the network, there is a reasonable case for making the WiFi nominally faster than the wired connection.

    Also remember that the nominal WiFi data rates don’t even correspond to the maximum sustained data rate under ideal conditions. The protocol has inevitable overhead even under ideal conditions.

    Don’t get me wrong, I really wish they’d have included a few GigE ports. I’d like a nice inexpensive AC1200 class router with GigE for bridging two wired networks. In that situation, the 100Mbps ports are a frequent bottleneck.

    In the end, though, even though the SoC supports GigE, there are still added costs in components and PCB space. I don’t know what the added cost would be, but, say $3 in added material costs could add 2-3x as much in selling price, which on such an inexpensive device pushes it into a new price point. Also, they aren’t just engineering a single product, they are engineering a product line.

  13. The spec above is missing lots of important parts: What is the Tx power, Rx Sensitivity (dBm), Antenna gain dB, is there a Guest Account, and of course the typical energy consumption (not the power brick capability) given that it will probably be on 24/7. I would like to see a full test under OpenWRT before considering it further.

  14. @Ravi
    Wrong on so many fronts.

    Most dual-band routers use a second chip for the 5GHz band, and the WiFi SoC for the 2.4GHz band.
    This device is no different, as explained by the other commenter.

    Moreover, the MT7621 SoCs don’t have ANY integrated WiFi, and so dual band routers based on them typically include two WiFi chips, one for 2.4GHz and one for 5GHz.

    Beyond that, there are multiple offerings in the MT7621 family, including a single core version.

  15. @Harley
    Xiaomi has a few higher end products. I’d expect their first 3-band offering to appear at those higher price points.

    Agree about the OpenWRT support. I have the earlier, two antenna, version of this device. It is nominally supported in 15.05.1, but I’ve found it to have serious problems in AP mode, particularly on the 5GHz radio.

    For that device, the stock firmware is OpenWRT based, but depends on proprietary binary drivers and other non-standard enhancements. There are also 3rd-party OpenWRT based firmwares that use more of OpenWRT, but still depend on binary drivers. I think its good to distinguish between OpenWRT and these derivatives.

    I wonder if the firmware for the older MiWiFi Mini will work with this unmodified since it looks substantially similar, other than the addition of two more external antennas.

  16. @cnxsoft

    I can easily get speeds of 300-400 Mbps with a decent USB antenna (not a tiny dongle, mind) and the R7000. That’s in the same room, though. It drops to 60-80 Mbps through two brick walls.

  17. eas :
    Agree about the OpenWRT support. I have the earlier, two antenna, version of this device. It is nominally supported in 15.05.1, but I’ve found it to have serious problems in AP mode, particularly on the 5GHz radio.
    There are also 3rd-party OpenWRT based firmwares that use more of OpenWRT, but still depend on binary drivers. I think its good to distinguish between OpenWRT and these derivatives.

    i also have the old 2 antennas version, i did try to find custom firmwares back then but ended up installing stock openwrt (after getting my “dev” access through their android app account..).

    Can you point me to those custom firmwares or at least the ones you know to work in ac or 5G. (i’m not using it in AP mode).
    thx

  18. Did anyone got any idea how many wifi user can be support by this Xiaomi Mi WiFi Router 3 Dual Band APP Control with 4 Antenna? So this router wouldn’t hang or lacking . Just thinking can this be use & replace the original router from ISP in church building?

  19. I am unable to connect my western digital elements external harddrive to the MI router 3. should I use any adapter as it is USB 2.0 interface?

  20. Question I have one of these working fine on the wireless network, I get ~90Mbps downlaod which is far better than I was getting with the old cisco router (now Bridged) one issue I’ve noticed is that the wired ports are only providing ~2Mbps. I know they’re 10/100 but I thought they would be able to handle more than that. Does anyone know if there is a setting missing?

    Oh and my internet speed is 240M, i tested the wired network just before switching to bridge mode and was getting ~215M. I uise this over cat5e in the walls to various rooms in the house.

  21. Hi !
    I’m also interested about a new gigabit router. My network is in gigabit and my internet is in fiber optic (France – 800mb/s).

    No news from Xiaomi?

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