Xiaomi Mi Router 4 Dual Band 2.4G 5G 1167Mbps Gigabit router

Condition: It's 8 months used and there is no problem at all. It's looks like a new one. All the accessories and box also available.

Reason behind selling: I want to upgrade my router with the whole home mesh router system.

Here is some specifications about the router:

Xiaomi Mi Router 4 Dual Band 2.4G 5G 1167Mbps Gigabit Wireless WiFi Router
Color White
Solution MT7621A MIPS Dual-core 880MHz
ROM 128M SLC Nand Flash
Memory 128MB DDR3-1200
Transmission
2.4G WiFi(2*2; Support IEEE 802.11N, Up to 300Mbps)
5G WiFi(2*2; Support IEEE 802.11AC, Up to 867Mbps)
Antenna 4 External dual band omnidirectional antennas
Interface
2 X 10/100/1000M LAN Port(Auto MDI/MDIX)
1 X 10/100/1000M WAN Port(Auto MDI/MDIX)
1 X Red/Blue/Yellow LED indicator
1 X MiNet Button
1 X Reset Button
1 X Power input
Wireless Parameters
1. Support 802.11 a/b/g/n/ac, IEEE 802.3/3u/3ab
2. Support 2.4GHz / 5GHz Dual Band
3. Wireless channel:
2.4GHz Channel: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 /
5GHz Channel: 149, 153, 157, 161, 165 /
5GHz DFS Channel: 36, 40, 44, 48, 52, 56, 60, 64
4. Modulation system:
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. MCS0~MCS31
11ac: MIMO-OFDM:BPSK,QPSK,16QAM,64QAM,256QAM. MCS0~MCS9
Language Chinese
Security WPA-PSK/WPA2-PSK, SSID, WiFi white-black list,
Wireless standard IEEE 802.11a / b / g / n / ac, IEEE 802.3 / 3u / 3ab
Power Supply 12V/1A US Plug