1Goal® VGA Switch 4 Port VGA SVGA Video Switcher 4 * 1 HD Signal Amplifier Booster Splitter Wide Screen 1 in 4 Out for Monitor Projector : Amazon.in: Computers & Accessories
Amazon.com: VGA KVM Switch, Yinker 4 Port USB VGA KVM Switch w/4 KVM Cables & 3 USB Hubs for 4 Computers Share One Monitor Keyboard Mouse : Electronics
4 Port VGA Switcher SVGA Monitor Sharing Switch Box 4‑in‑1‑out For LCD PC TV GF0 | eBay