Feature:4 Slots brings great extendability.Plugs directly to the board without any extender cable, can be fixed to the case.PCI-E slot power solution, no extra power cable needed.Only one cable to the slot, easy and convenient to settle and install.With IC heat radiator.Specification:Bus Port: PCI-EInterface type: PCI-E 1X to 4-port USB 3.0Size: approx. 12x7x2cmWeight: approx. 39gSupported OS: Linux, Windows XP/7/8/10Notes: Please allow 1-3cm error due to manual measurement and there will be different color as different display, please understand. Thanks.Package Included:1 X PCI-E 1X to 4 USB3.0 ConverterNO Retail Box. Packed Safely in Bubble Bag.