ATEN 4x4 VGA Matrix Switch with RS232 (VM0404) - Max Resolution: Up to 1920 x 1440, Video Input Interfaces: 4 x HDB-15 Male (Blue), Video Output Interfaces: 4 x HDB-15 Female (Blue), Audio Input: 4 x Mini Stereo Jack Female (Green), Output: 4 x Mini Stereo Jack Female (Green), Control RS-232: Connector: 1 x DB-9 Female (Black), IR: 1 x Mini Stereo Jack Female (Black), Connectors Power: 1 x DC Jack (Black)