After reading the reviews, it turned out that the product was exactly as advertised. The direction was clear. Since the hardware on both computers is for PS2, I had to buy a $10 PS2 to USB converter at my local computer store. The converter allows me to take a computer that doesn't have ports for a PS2 mouse or keyboard and plug it into a single USB port. Using KMV Switch worked great. I installed the hardware. Then I started each computer and allowed each to become fully functional before starting the second. When switching from one to the other, the lag time was about 2 seconds or less. Some notice that it can take around 8 seconds between computers. I would recommend that monitor drivers, if any, be downloaded to each computer before connecting to reduce the chance of freezes. In my case I am using a Dell 1703 and I did not use the standard MS plug and play but downloaded the monitor specific drivers.
CKL Quad Monitor HDMI KVM Switch 4 Port 4K@30Hz with Cables - Extended and Mirrored Display Support for Windows, Linux, and Mac
11 Review
CKL 4 Port KVM Switch Dual Monitor DisplayPort 4K 60Hz: Unprecedented Multi-Computer Control with Audio, USB 2.0 HUBS, and DP 1.2
11 Review
4 Port USB 3.0 Switch Selector - Pubioh KVM Switch for Mouse, Keyboard, Printer, Scanner - 2 in 4 Out Sharing Box with Switch Button and 2 USB 3.0 A to A Cables
11 Review
NEWCARE HDMI KVM Switch: 4K@60Hz, 2x1 HDMI2.0 Ports + 3X USB KVM Ports - Share 2 Computers on UHD Monitor, with Wireless Keyboard and Mouse Support - USB Disk, Printer, USB Camera Compatible
10 Review
Zalman Z3 M ATX π» Tower Computer: A Compact and Powerful Machine
77 Review
Computer case AeroCool Cylon black
39 Review
Computer case be quiet! Pure Base 500 black
32 Review
Fractal Design Define R5 - ATX Mid Tower Computer Case - High Airflow and Silent Optimized - Includes 2x Dynamix GP-14 140mm Silent Fans - Water-Cooling Ready - Black
43 Review