This Universal 3-in-1 KVM Switch Cables are designed to be the highest quality tangle-free KVM switch cables available. These cables combine separate keyboard, monitor, and mouse in to one cable split apart at each end. This design makes them inherently tangle-free and easier to manage since the total cable count is reduced to 1/3. They are compatible with any KVM switch capable of using standard console connections like the StarView, OmniView, SwitchView, Apex, Compaq, IBM, or the MasterView. The VGA Video section of the cable is coaxial eliminating picture "ghosting" and fuzzy images, and using ferrite cores near the connector ends provides superior EMI interference protection. The Universal KVM cables are available in a wide range of lengths from 6 to 50 feet and offering PS/2 or AT style connections

Depends on how many computers do you want connect to the Keyboard/Monitor/Mouse switch mouse, you need one set cable for each computer. For two computers to share one Monitor/Keyboard/Mouse, you need two of this cable set, for 4 computers to share one Monitor/Keyboard/Mouse, you need 4 of this cable set.

We have 6', 15', 35' and 50' long set cable, you can different cable set for different computer .
Specifications:

Length: 6 ft., 1.8m

Connectors: PS/2 Style

Keyboard Connectors: 6 DIN Male (both ends)

Mouse Connectors: 6 DIN Male (both ends)

Video Connectors: DB15 Male/Male, High Density DB15 Male to PCs, High Density DB15 Male to KVM Switch

(Note: This cable set will work all kinds PS/2 style Keyboard/Monitor/Mouse switch boxes, but some models may require gender changing cable adapters.)