The NS431D is a 4-port KVM switch, PS/2+AT/serial and On Screen Display.
Its low cost, super small size, and high 2048x1536 maximum resolution display capability makes NewStar switches perfect for any application where reliability, compatibility, and faultless operation are important.
Newstar NS431D. Keyboard port type: PS/2, Mouse port type: PS/2. Maximum resolution: 2048 x 1536 pixels. Colour of product: Black. Connectivity technology: Wired, Bandwidth: 400 MHz