These definitely last forever! I've been using mine for around the same amount of time. Some of mine are supplied with an OEM stamp, like Fujitsu-Siemens, but mine is an SBF69 but I recognize your mouse as well. I think these are great! :D Yep old Logitech is nothing alike today`s logitech, that is …

There are many projects about converting a ps/2 mouse signal to a rs232 mouse signal using a PIC or Atmel chip.. For USB, there are a few, too. https://www.versalent.biz/usbm232.htm https://hackaday.com/2017/10/09/a-converter-you-wont-have-ps2-mouse-to-serial-mouse/ https://m.youtube.com/watch?v= …