The Black Box ServSwitch ACU3009A CAT5 KVM Micro Remote Module is an extend module specifically designed for use with the ServSwitch ACU3009A model. It is a black-colored module with Cat 5 connectors, providing a convenient and flexible solution for extending the reach of your KVM switch. This remote module allows you to easily control multiple servers or workstations from a central location, making it a valuable addition to any computer networking setup.