On the little quarter-inch to USB adapter, [Seth] included an HD 6402 UART to talk to the keyboard, along with a Teensy dev board and a few bits of circuits stolen from DEC engineers.

[Ladyada] and [pt] had an old keyboard from NeXT, but since it used a custom protocol it wasn’t usable with modern hardware. So they built a custom device to convert the NeXT protocol to USB.… ...

In short, many old PCs simply weren't made to interface with USB devices at all, and some simpler adapters may not even work properly, depending on keyboard or system.

Hi-We have a few (7) old DOS based 486s left and I cannot find keyboards left to use as the old ones break, due to the HUGE plug size. Looks to be twice the PS/2 plug size.I have lots of PS/2 and ...

Have an old USB keyboard you love, but wish was wireless? DIYer DastardlyLabs shows off how to make your own little adapter that’ll convert just about any old USB keyboard to Bluetooth.

The adapter also includes a pair of controller ports that will make any Commodore-compatible joystick or gamepad function as a modern USB controller, which could justify the price tag alone if you ...

If you are not comfortable taking apart a keyboard you may be fond of, then you can use an ADB-to-USB dongle such as the Griffin 2001-ADB adapter to connect your old keyboard, mouse, and many ...

A PS/2-to-USB adapter takes care of the difference. Iljitsch van Beijnum And surprisingly, this 2 kg (4.4 pound) battleship of a keyboard only needs 100 mA power from the USB port.