PCIE structure capable of tool-free disassembly/assembly

A peripheral component interconnect express, PCIE, structure capable of tool-free disassembly and assembly, comprising a node base and at least two PCIE brackets, wherein a board card is mounted at the node base, the board card is provided with a PCIE insertion slot, a riser card is mounted at each of the PCIE brackets, the PCIE insertion slot is configured for mounting a PCIE card via the riser card, the PCIE brackets are detachably mounted on the node base, the adjacent PCIE brackets are fixed to the node base by a fixing device, and the node base equipped with the PCIE brackets is allowed to be smoothly placed into a machine case;

• wherein
• the fixing device is a buckle, and the buckle is mounted at the node base through a buckle seat;
• each of two sides of the buckle close to the PCIE brackets is provided with a contractible protrusion;
• and
• the buckle seat is provided with a buckle knob and a spring, one end of the spring is connected to the contractible protrusion, and another end of the spring is connected to the buckle knob.