Like other model M's of this era, these have a 6 pin SDL plug, but the scan codes are not mapped to what the keycaps show. Please message me after purchase if you want the file that shows what each key is mapped to by default so you can change them without having to experiment or use HID listen.
The only way that I know for certain to make these work with regular computers is to use a Soarer’s converter, but there may be other ways as well. Would also make a good collectors item if you are wanting to collect some of the rarer types of model M's out there.
Shipping will be FREE to the USA by USPS or UPS ground depending on location and quantity ordered. Thanks for looking and please ask any questions that you may have!