A monitor for a host computer includes a display circuit, a peripheral equipment interface, a power circuit, and a monitor video interface. The display circuit is capable of controlling display of the monitor. The peripheral equipment interface is disposed on a frame of the monitor. The peripheral equipment interface includes a plurality of signal pins. The power circuit is capable of providing power to the display circuit and the peripheral equipment interface. The monitor video interface mates with a video interface of a motherboard of the host computer. The monitor video interface includes a plurality of video pins and idle pins. The video pins are connected to the display circuit. The idle pins are connected to the idle pins of the motherboard video interface. The idle pins of the motherboard video interface are connected to a chip of the motherboard.