802.11n Speeds from an 802.11G only Wifi Module?

[Volactic]

My Thinkpad T61 Uses an Intel 4965 Wifi module and, I am a bit confused on what it is capable of. In the OS it shows up as "Intel PRO/Wireless 4965 AG or AGN Network Connection", and on the chip itself the model is "4965AG". This suggests that it is only capable of going up to 802.11g at 2.4Ghz / 54mbps, and this used to be true, but about a week ago for seemingly no reason, it's started working on 802.11n at 5Ghz / 450mpbs. Is there any explanation as to what's going on? Was there a firmware update that happened that I was unaware of? I ran a speedtest to make sure it was actually running at that speed, and it is. There is also no indication anywhere on the module itself that it supports the 802.11n standard.

[Ryccardo]

Back then there was a big fuss as contemporary Macs came with wireless cards that had draft-N support disabled (which makes some sense, as the standard wasn't set yet so some dealbreaker could happen) and, once that wasn't found to be a problem, they dared sell it as a paid extra (I have this bookmark from back then: https://notes.kateva.org/2007/01/sarban ... es-in.html ), maybe it's the same case - except for how it got enabled?

This: http://en.techinfodepot.shoutwiki.com/w ... nk_4965AGN also shows in the first example a 4965AG (which I've never heard of before) working as an AGN...

[Gonzaleitor]

Are you saying that the 4965AG is n capable? What driver do you need to achieve this?

[Volactic]

Are you saying that the 4965AG is n capable? What driver do you need to achieve this?

I'm using Chrome OS Flex right now, which is a version of Chrome OS meant to run on "normal" computers. It's linux based, so I guess it's using whatever driver is built in to the kernel. As for Windows, I don't know which driver to use.

[axur-delmeria]

I just compared the iwl4965 firmware blobs on Debian Stretch and Bullseye, and they're identical. Either it's a change in the kernel driver, or another component of the Linux WiFi subsystem.