COMFAST CF-952AX - purchased three, all working with mt7921u driver

[jpamills]

Just a little user report here. I purchased three COMFAST CF-952AX devices on Aliexpress recently.

All three are working with the kmod-mt7921u driver in OpenWrt 23.05.2.

I've connected them to my Linksys E8450 devices, so that on each device, the internal 5GHz radio can be dedicated to Mesh backhaul, and the USB dongle can be my 5GHz APs. I do get a bottleneck from the USB2 port, but I'm still able to get around 200/150 Mbps to my phone, and it's more stable than having the AP and Mesh backhaul on a single radio, as I had before.

All three also come with 3574:6211 as their USB Device ID.

I tried various configuration settings in /etc/config/wireless , but settled on:

config wifi-device 'radio2'
    option type 'mac80211'
    option path 'platform/1a0c0000.usb/usb1/1-1/1-1:1.0'
    option channel '36'
    option band '5g'
    option htmode 'HE80'
    option country 'SG'
    option cell_density '0'
        option he_bss_color '41'

config wifi-iface 'wifinet2'
    option device 'radio2'
    option mode 'ap'
    option ssid 'MYNAMEHERE'
    option encryption 'psk2'
    option skip_inactivity_poll '1'
    option disassoc_low_ack '0'
    option key 'MYPASSWORDHERE'
    option network 'lan'

They also work fine on the 2.4GHz band in WiFi 6, 802.11ax, HE20, but I've not been able to connect to the AP in the 6GHz band. Perhaps none of my devices actually support it.

[morrownr]

Hi @jpamills

Thanks for the report.

I've not been able to connect to the AP in the 6GHz band. Perhaps none of my devices actually support it.

The mt7921au chipset certainly supports it unless the maker turned the support off. My guess would be that this is probably an issue with regdb. WiFi 6e (6 GHz) support around the world is uneven as far as laws and regulations are concerned. You might want to download and check the regdb for SG to see what it says. I can provide the link if you need it. I have seen reports from EU users having success with 6 GHz in AP mode with similar adapters but they were using country codes like DE and FR.

I do not have have this 952AX adapter in the Plug and Play List even though I have had reports of success. The problem I have had is having a good solid source where users can buy this adapter and be sure this is the adapter they are getting. Would you mind sharing the url where you purchased the product and any comments you have about dealing with the retailer... should this adapter be listed in the Plug and Play List?

@morrownr