What type of connection does the controlling keyboard, video display, and mouse have?
Depending on whether they are PS/2®, USB, or some combination of both, your connections determine what type of cabling you need.
If you are using USB devices, like keyboards and mice, make sure to purchase a KVM switch with USB support. Older KVMs usually only support PS/2 connections.
Do your CPUs require keyboard or keyboard and mouse emulation?
Keyboard emulation and keyboard and mouse emulation are enhanced features of most KVM switches. They enable each CPU to communicate with the switch as if it were directly attached to the controlling keyboard or mouse.
What operating system (OS) software do your computers use?
Are all your computers running the same OS? Or, like many organizations, do you have multiple CPUs running different OSs? With the right KVM switch, interconnecting multiple CPUs running different OSs is easy.
How close are your users to your servers?
If servers and users are physically close to each other, an analog KVM system will meet your needs. On the other hand, if users require access from remote locations because they travel, or if an IT manager needs to manage a distant data center, a KVM over IP (KVMoIP) system is going to be the best fit for your organization.