https://hackaday.com/2016/06/30/transcend-wifi-sd-card-is-a-...

Edit also, there was picture frames at one point with bluetooth that ran linux that were hacked, I made a video years ago, funny to look back on

https://www.youtube.com/watch?v=FEP0i1zteVM

https://news.ycombinator.com/item?id=16187939

....the SoC in this contains a Big-Endian MIPS core.

[0] http://www.dx.com/p/NEXX-WT3020F-Portable-Mini-300Mbps-Wirel...

For the original porting work done on OpenWRT, check this link: https://wiki.hackerspace.pl/projects:zsun-wifi-card-reader

For more recent work done to get up-to-date LEDE builds running on the device, check https://forum.lede-project.org/t/supporting-zsun-wifi-card-r...

This seems to be a somewhat rare feature... I might get one just to try this.

Does anyone know of other cards that support something like this? Is there a difference between being able to associate with multiple APs and being able to host multiple APs (or some combination of both)?

I wonder how soon a nice security-oriented package set will emerge. I suppose the USB interface should work as a USB-connected NIC, offering https / ssh / u2f access to the host on the card.