Bests & Worsts Reviews from Amazon

For testing purposes I have an Ortek MCK-142 Pro mechanical keyboard that is a favorite throughout my office. It is an AT model with a PS-2 output. In addition, I added an IBM KB-8923 and a Dell SK-8100, both ‘pure’ PS-2 keyboards. I want to use these on a modern desktop computer with 2.0 and 3.0 USB ports. In researching for a way to do it, I realized that there is a difference between an ‘adapter’, which is only a wiring solution and a ‘converter’ that has electronics to assist in making it work. The problem is that there are many brands and items available and no real way of knowing whether any or all of them will work. So I took the proverbial bull by the horns and bought one of each to try out. This resulted in ordering 9 items for a cost of about $77, not too bad for my purposes. I purchased: USB TO DUAL PS2 Adapter Convertor – White by SaiTech IT; Monoprice PS/2 Keyboard/Mouse to USB Converter Adapter, Black (110934); Tripp Lite USB to PS/2 Adapter - Keyboard and Mouse (B015-000); TRENDnet USB 1.1 to PS/2 Converter, TU-PS2; Adesso PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub (ADP-PU21 ); SANOXY USB to PS/2 Adapter (this one has wires); StarTech USB to PS/2 Adapter - Keyboard and Mouse; Radio Shack PS-2 Female to USB-A Port Adapter 26-723; and SANOXY PS2 Keyboard To USB Adapter (this one is a little block). I tried them one by one. All were recognized on the USB Device Manager as a keyboard, yet all, but one, failed to allow the keyboards to be recognized and function. The only one that worked perfectly for all 3 keyboards was the “SANOXY PS2 Keyboard To USB Adapter” – the one that is a little block. This being Amazon, I immediately returned the other 8 and ordered a bunch of the Sanoxy's. Thought you might find my experiment helpful.SANOXY PS2 Keyboard To USB Adapter