How to change Logitech ps/2 keyboard to usb one?

Question

I was using a cheap quantum(qhmpl) USB keyboard ,now it's keys not working so I thought to replace it with another keyboard . I have a working keyboard Logitech k100 but it's a ps/2 one .I searched about it and found that it's possible to change a ps/2 keyboard to a USB keyboard .so what I did is that I cut the usb socket and attached it to my Logitech ps/2 keyboard by replacing it's ps/2 socket with usb socket and linking same colour wires to each other . Now what I got is an unresponsive keyboard with all three lights blinking simultaneously . Can someone suggest me where is the exact problem and how should I resolve it . My pc doesn't have any problem and it has Intel dh87mc motherboard with usb sockets ONLY ,no ps/2 socket there ,thank you !

Note : It would be better if any Logitech user can suggest what different colour wires represent , for example kindly go through following vid to get an idea about it ,thank you! https://m.youtube.com/watch?v=V_ytY6lhzD0

Answer 1

The converters like these:

are just for the connections.

It will not make a USB-only keyboard work in PS/2.

It will not make a PS/2-only keyboard work on USB.

The keyboard that came with such an adapter was capable of both USB and PS/2 connections. It detects if it is plugged into a USB port or a PS/2 port and then adapts to that connection type.