The Black Box ServSwitch ACU1006VRA Rackmount CAT5 KVM Extender Local Hub is a black, extender-type device that allows for the remote operation of multiple computers through a Cat 5 connector. It is designed to be rackmounted and is compatible with the ACU1006VRA model. Made in the United States, this KVM switch offers a convenient and efficient way to control multiple computer systems from a central location.