Haier HAR-20S2U1

abgn+ac+ax (AX1800)
wireless router
3rd Party Firmware
dd-wrt	Status Unknown
OpenWrt	Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	Haier HAR-20S2U1
FCC ID	none specified
Type	wireless router
CPU1	MediaTek MT7621AT
CPU1 Type	MIPS 1004Kc
CPU1 Speed	880 MHz ( 2 cores ) 16-bit
Flash1 Chip	Brand? Model?
Flash1 Size	128 MiB134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br />
RAM1 Size	256 MiB268,435,456 B <br />2,097,152 Kib <br />262,144 KiB <br />2,048 Mib <br />0.25 GiB <br />
RAM1 Chip	Brand? Model?
ETH chip1	MediaTek MT7621AT
Switch	MediaTek MT7530
Ethernet Port Count	4-1GbE-LAN
Wired Standard	IEEE 802.3i/3u/3ab
802dot11 OUI: none specified
Expansion IF types	none specified
Power	12 VDC, 1.5 A
Serial Port (UART)	yes, 3.3, (115200 8N1)
Other
3rd Party Firmware Support	OpenWrt • (List | Dev | DLs)
Radio 1
Chip1	MediaTek MT7905DAN
Chip2	MediaTek MT7975DN
Wireless interface OUI	none specified
Antenna Connector Type	none specified
MIMO status	2x2:2
Wireless Standard	IEEE 802.11b/g/n/ax
802.11ax	up to 574 Mbps
802.11n	up to 300 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
WiFi Operating Frequency	2.4 GHz
Radio 2
Chip1	MediaTek MT7905DAN
Chip2	MediaTek MT7975DN
Wireless interface OUI	none specified
Antenna Connector Type	none specified
MIMO status	2x2:2
Wireless Standard	IEEE 802.11a/n/ac/ax
802.11ax	up to 1201 Mbps
802.11ac	up to 867 Mbps
802.11n	up to 300 Mbps
802.11a	up to 54 Mbps
WiFi Operating Frequency	5 GHz

For a list of all currently documented MediaTek chipsets with specifications, see MediaTek.

• 1201 Mbps - 2SS 5GHz 802.11ax (80MHz chan., 1024-QAM)

• 574 Mbps - 2SS 2.4GHz 802.11ax (40MHz chan., 256-QAM) = AX1800 class

Flashing

Flashing OpenWrt

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki
OpenWrt Target: ramips
OpenWrt Subtarget: mt7621
OpenWrt Package architecture: mipsel_24kc
Support started version: 23.05.0
Current supported version: 23.05.5

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