Combine your dual-display setup with a reliable KVM switch for the ultimate in convenience and cost-savings. With the StarTech.com SV421DD, up to four dual-display PCs can share two monitors, one keyboard, and one mouse. You'll be able to instantly switch back and forth between PCs with the touch of a button and still maintain professional-level video quality on both your monitors. Ideal for graphic designers, CAD/CAM designers or educational and financial institutions, the SV421DD will help you save your money by eliminating redundant peripherals. If you're running a dual-display setup, chances are your desk space is already tight. StarTech.com has designed the SV421DD to have all its connections in the rear to prevent excess cable clutter and save you space as well as money.