Premier Cable make a lot of Round panel mount PS2, PS-2, Mini Din 6 pin, Mini Din 8 pin cables
 
All these connector can have the same role as below Schlegel item

 
Schlegel PS/2 Keyboard mouse Cable 
 
PS2-Buchse silberfarben, twin rund, RONTRON-R-JUWEL
 
Schlegel PS2-Buchse mit vorne, PS2-Buchse und hinten, PS2-Kabel 
 
Schlegel RONTRON-R-JUWEL RRJ_PS2_200CM PS2 jack connector

 
You can see the products details from below link , https://www.premier-cable.net/product/Round-Panel-Mount-Cables-17
  

If you need product details, drawings, and samples, you can use below contact info : 

Skype : James198585 

 
Wechat : 13929497934
 

James@premier-cable.net

 
sales@premier-cable-mfg.com