IP KVM Switch vs. CAT5 KVM Switch
IP KVM Switches allow you to control multiple computer and servers over the IP network remotely (on the a LAN or a WAN) so by definition IP KVM Switches are on the control side - administrator side.
CAT5 KVM Switch enable you to connect computer and servers to a KVM Switch via ordinary CAT5 cables instead of traditional KVM Cables (keyboard, mouse and monitor cables) which tend to be bulky, limited in distance and take more space in a rack installation. However CAT5 KVM Switches connect using ordinary category cables (such as CAT5, CAT5e, CAT6 or CAT7) which tend to be smaller, neater to install and don't take a lot of space when routed appropriately. CAT5 cables also surpass the distance of traditional KVM cables.
So by definition CAT5 KVM Switches are more on the controlled server or computer side and have nothing to do with the
How KVM Extenders Work?
KVM Extenders rely on a simple design to operate. The most common design of KVM Extenders involves a transmitter and a receiver that are interconnected using either CATx cables (CAT5, CAT5e, CAT6 and CAT7) or Fiber Optic Cables.
Transmitters connect to the source of signal (i.e. server, computer, KVM Switch), the transmitter will connect to the keyboard, mouse, monitor, audio and serial on the signal source using standard analog cables.
The transmitter will take the signal from the source and process it (compression, digitizing) and then send it over the cable medium (CATx Cables or Fiber Cables) to the receiver.
The receiver will get the signal from the transmitter and process it (decompress and de-digitize) and output the signal to the extended peripherals (keyboard, mouse, monitor, speakers, microphone, serial ...etc).