Features: brand new and high quality 4 Slots brings great extendability. Plugs directly to the board without extender cable, can be attached to the for case. PCI-E slot power solution, no need for extra power cable. Only one cable to connect the lock, easy and convenient to establish and install. with IC radiator. Attention:1. This extension is applicable to the motherboard PCI - E 1X slot, please connect the power cord for the floppy. When plug PCI - E extension, computer should plug broken wires again.2. The shape of a complete set of wire rod is customized, never grab line to plug in. Do not forget that!3. When plug wire must identify the direction, not to counter or offset, to avoid burning equipment, plug wire when the socket of equipment first, then plug wire, to avoid too hard plug socket pin is broken. Specifications: Type Name: 1 to 4 PCI-E USB3.0 Adapter Card Color :blue Material: Metal + Plastic Bus: PCI-E Port Quantity: 4 x USB Size: approx. 120x65x18.5mm/4.72x2.56x0.73in Supported OS: for DOS, for Linux, for Windows XP/7/8/10 Package Includes: 1PC x 1 to 4 PCI-E Adapter Card note: Due to the original production of for raw materials shortage and production batches are different, the card slot and cable color will have some differences, but the card is the same function, please rest assured that it will not affect the normal use, hope to understand. (colors are sent randomly!) There may be little error of size for manual measurement. The color deviation may be different due to different monitor settings, please understand.