A computer switch with 5(five) DB-15 hd female connectors.
Used to share 4 (four) CPU's with One Monitor.
Manual switch can maintain a clear signal upto 800x600
For HIgher Resolutios Use Switch with amplification is suggested Part 30012
This VGA HD15 ABCD Switch Box Rotary Dial Heavy Duty is a great investment for my presentation needs. It works seamlessly and has saved me a lot of time.