I have got yellow white green and red for ps2 how to connect it to usb now??

[Anjal_]

Usb connecting to ps2
Usb colour -red white green black
Ps2 colour-red white green yellow

 

[Mason_1]

Ground for USB is Black which should be connected to the yellow on the PS2 side.
Clock wire on PS2 is White which should be connected to Green Data + wire on USB.
Green Data wire on PS2 should be wired to the white data- wire on USB.
Last connect the VDC -5V rail on both sides, these are red.