Startechcom kvm switches and accessories startechcom sv231usbddm the sv231usbddm 2 port usb vga kvm switch from startechcom lets you control 2 vga usb equipped pcs using a single peripheral set at high definition vga resolutions up to 1920 x 1440the included kvm cables provide a ready out of the box solution while usb dynamic device mapping ddm and display data channel ddc features work to reduce switching lag time and improve overall compatibility with your connected display and in