[cctalk] Re: What is an "FS/2" connector?

Hi, I just saw an unknown to me connector listed on an eBay auction and was wondering if anyone knows more about an "FS/2" connector. Link - FS/2 to IBM PC-AT P-1940-0042 CABLE 6 FOOT FREE SHIPPING  - https://www.ebay.com/itm/304580270070 I assumed it was a typo / poor original copy that should have been a "PS/2".  But hovering over the label on the first three pictures clearly shows "FS/2".  Whats more is the kerning on the "F" is easily differentiated from the "P" elsewhere on the same label.  So it seems that it's not the typo / faded label / etc. that I assumed it was before clicking on the link. So ... does anyone know what an "FS/2" connector is?