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To achieve this, BIOS support for Both PnP and a PnP expansion card are required.
POST
Power-up self-test.During the start-up of the system, the BIOS performs a continuous detection
operation on the system, including detecting RAM, keyboard, hard drive, etc., to see if it is properly
connected and working properly.
PS/2
An interface specification developed by IBM for keyboard and mouse connections.PS/2 is a DIN
interface with only 6PIN and can also be used to connect to other devices, such as modems.
Usb
Universal serial bus. A hardware interface suitable for low-speed peripherals, generally used to
connect keyboards, mice, etc.A PC can connect up to 127 USB devices, providing a 12Mbit/s
transmission bandwidth, and USB supports hot-swap and multi-data capabilities, which allow USB
devices to be plugged into when the system is working, and the system can automatically identify
and allow the plugged-in device to function properly.
Dmi
Direct media interface, data transfer channel between processor CPU and IO controller (PCH, ICH).
Fsb
Front-end bus, external bus.
PCIE
Full name Peripheral Component Interconnect Express a high-speed serial differential full duplex
bus transport specification.
