Mi Router 4A
High-Speed Dual Band AC1200 Router
4 external antennas

64 MB memory for stable operation

Control remotely via app

Unauthorized access prevention

Parental Control

Enjoy a wireless dual band speed of 1167Mbps
for a faster and smoother online experience
With 300Mbps over the 2.4GHz band and 867Mbps over the the crystal clear 5GHz band, the max wireless speed is up to 1167Mbps
The 2.4GHz band offers transmission over greater distances, with better coverage and better penetration through walls;
The 5GHz band adopts 802.11ac technology
Less interference and higher speeds for a smoother experience watching HD videos and playing multiplayer online games

Smart Connect, once open tihis function in app,
there’s no longer any confusion over which one to connect to
The Mi Router 4A supports Smart Connect, offering 2.4GHz and 5GHz bands under one Wi-Fi name
No more confusion over which Wi-Fi network to connect to 2.4GHz offers better performance through walls, while 5GHz provides higher speeds.
The optimal frequency band is automatically selected by a dual-band terminal

4 external antennas
so that the signal can travel through walls better
4 external omnidirectional antennas, precision tested,
and with a carefully designed internal structure and configuration
Greatly improves transmission performance,
even in complex environments

Dual cooling fin heat sinks for better system stability
A specially treated metal substrate is combined with nanomaterials boasting exceptional thermal radiation features.
Offers both excellent heat absorption and heat dissipation capabilities to effectively lower the chip temperature and provide improved system stability.

Integrated signal amplifier,
providing a good Wi-Fi signal and wide coverage
2.4GHz and 5GHz wireless chipset integrates PA and LNA.
The PA (power amplifier) effectively strengthens the signal transmission power,
while the LNA (low noise amplifier) can improve the sensitivity of the signal receiver.
Allows the signal to be transmitted over greater distances, with better penetration through walls, and wider coverage.

In the age of the smart home,
having more connected devices requires a stable network connection
Mi Router 4A has a large 64MB memory
Ensures the stability of data transmission and stable connectivity of each access device

An intelligent error correction algorithm
improves weak signals for more stable and efficient transmission
The 5GHz band supports the LDPC (low-density parity-check code) error correction algorithm to enhance anti-jamming capabilities during data transmission.
Significantly enhanced Wi-Fi signal coverage for improved efficiency in data transmission.

Easily manage the time children spend online
and the content they access to make sure they are kept safe online
Effectively manage your family’s time online by setting the amount of time a device may be online,
and the websites that can be accessed.
Combined with the intelligent speed limit function,
the speed of each access device can be limited to avoid network congestion caused by individual devices.

Receive a phone alert when unauthorized users access your Wi-Fi, and block them instantly.
When an unknown device uses the Wi-Fi signal without permission,
the Mi WiFi app can send out a notification to inform the user that a new device has connected.
If a suspicious device tries to join the network, depending on the security level,
the device will be automatically blocked from connecting, or you will be prompted to block the device with one push of a button.

Internet settings even the elder family members can handle
The internet settings are quick, easy and simple enough for even the elder family members to understand!

Eco-friendly casing to protect the environment
Both the Mi Router 4A casing and packaging are made of recyclable
and environmentally friendly materials that cut down on environmental damage so that we can protect our precious planet

Over 220,000 test cycles

4 scenarios, cumulative number of
20 devices being powered on and off

Extreme environment testing

Over 1000 hours

6 scenarios, cumulative testing with 4 devices

Testing of multiple simultaneous
device connections

64 devices

Over 6 test cycles

Drop testing: against a marble floor,
from a height of 1 meter

Memory stress testing

Over 180,000 test cycles

Cumulative number of read and write
operations on 20 sample devices

Flash memory device reliability testing

Over 100,000 test cycles

Flash continuous read/write tests

Collaborations with authoritative international
test instrument manufacturers ensure router stability
In cooperation with authoritative international test instrument manufacturers such as Spirent and lxia,
we conduct large-scale tests simulating scenarios in the home and router performance under extreme conditions to ensure that the router is able to operate stably under various conditions

The simple design sits easily in any home
The router body has an understated geometric form and durable non-coated matte white plastic shell which blends in with the home.

Dimensions
188 mm x 100.5 mm x 175 mm

Product color
White

Processor
MT7628DA

Internal memory
64MB

2.4G Wi-Fi
2x2 (supports the IEEE 802.11n protocol, maximum possible speed of 300Mbp

5G Wi-Fi
2x2 (supports the IEEE 802.11ac protocol, maximum possible speed of 867Mbps)

Product antennas
4 external omnidirectional antennas (two 2.4GHz antennas with maximum gain of 5dBi; two 5GHz antennas with maximum gain of 6dBi)

Product heat dissipation
Natural heat dissipation

Total interfaces
Two 10/100M self-adaptive LAN ports (Auto MDI/MDIX)
One 10/100M self-adaptive WAN port (Auto MDI/MDIX)

LED indicator lights
2

System reset buttons
1

Power input interface
1

Protocol standards
IEEE 802.11a/b/g/n/ac, IEEE 802.3/3u

Certification standards
GB9254-2008, YD/T993-1998, GB4943.1-2011

Wireless specifications
Dual band
2.4GHz and 5GHz

Modulation
11b: DSSS: DBPSK (1Mbps), DQPSK (2Mbps), CCK (5.5/11Mbps)
11a/g: OFDM: BPSK (6/9Mbps), QPSK (12/18Mbps), 16QAM (24/36Mbps),
64QAM (48/54Mbps)
11n: MIMO-OFDM: BPSK, QPSK, 16QAM, 64QAM. Rate set: MCS0 to MCS15
11ac: MIMO-OFDM: BPSK, QPSK, 16QAM, 64QAM, 256QAM. Rate set:
MCS0 to MCS9 (supports 2 streams)

Software
specifications
Operating system
Mi Wi-Fi ROM intelligent router operating system based on a highly customized version of OpenWRT

Wireless security
WPA-PSK/WPA-PSK2 encryption, wireless access control (blacklist and whitelist), SSID hiding, smart unauthorized access prevention

Management application
Supports web, iOS, and Android