If the laptop you are using only has a usb interface, and does not have a ps/2 keyboard and mouse interface, a USB to ps/2 cable can solve your problem.
Support windows98/98se/me/2000/xp and macos9.0/osx/linux, suitable for machines without ps2 interface.
Plug and play, no need to install the driver for automatic identification.
Supports hot swap, suitable for any computer and laptop.
Application range: usb transfers to two ps/2, which can be connected to ps/2 keyboard and mouse at the same time, and can be used in bios.