The invention provides a computer compatible with a 10-gigabit network card, a gigabit network card and the 10-gigabit network card, the computer comprises an FPC interface, the FPC interface is provided with four pins, and if the 10-gigabit network card is connected, + 12 V power supply is connected; if the gigabit network card is connected, the pins are idle pins; the FPC interface is provided with three power supply pins used for connecting + 3.3 V power supply pins. The FPC interface is respectively provided with pins used for being connected with an LANWAKEB signal, a PERSTB signal and aclock differential pair signal. The FPC interface is provided with four groups of pins used for connecting PCIETX and RX differential pair signals, and each group is provided with four pins. The FPC interface is provided with a pin, and if the a 10-gigabit network card is connected, the pin is idle, and if a gigabit network card is connected, the pin is connected to a CLKREQB signal; the cost is saved, the requirements for lightness, thinness and simplification of products are met, meanwhile, a gigabit network card can be compatible, and the product applicability is improved.