Effectively solve the insufficient PCI-E interface of the motherboard, and one interface can be expanded to 7; Adopting a plug-in board design, it can be directly connected to the motherboard interface without an extension cable, and it can be fixed to the chassis, the stability and reliability are greatly improved! The main control board adopts the PCI-E interface for direct power supply, no external power cord is required, so that the main control board power is not interfered by the outside world, and the stability is higher! Reduce the number of adapters and adapter cables. One wire goes directly to the interface, effectively reducing interface interference and wire loss, ensuring data reliability, and improving work efficiency! The USB connector is gold-plated, which reduces interference between interfaces and enhances data integrity. Colour:Photo Color Material:Metal Package Contents: 1 * riser card 7 * expansion card 7 * USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.