A KVM switch enables you to control multiple PCs/servers via a single keyboard, monitor and mouse. With this product, four computers can be connected via USB and HDMI. The KVM switch also provides a USB 3.0 hub port for another peripheral. 4-port KVM switch with HDMI - USB 2.0 / 3.0, audio Switch using the push button, hotkey, mouse or RS232 command Scan mode for automatic monitoring Independent audio switching LED display Compatible with HDCP 2.2 Firmware upgradeable Ports: Input: 1 x HDMI female, 2 x USB-A female, 2 x USB-A 3.0 female, 2 x 3.5 mm audio female, Output: 4 x HDMI female, 4 x USB-B 3.0 female, 4 x 3.5 mm audio female, DC female Colour: Black Includes: AC adapter, 4 x Cable set (HDMI male - HDMI male, USB-A 3.0 male Type-B male, 3.5 mm audio jack - audio jack)