Features: Multiplier version: 9pin splitter 1 to 2 or 1 to 4 usb2.0 adapter. 1 to 4 version with double chipset included, works well and stable. With back glue, can be directly fixed on the main board or chassis firmly. Prevent short circuit outlet design. Prevent accidental removal of circuit board, pins and for case the risk of short circuit. Plug 9PIN interface to motherboard set, transfer one or two 9PIN to two or four USB2.0 on the front panel. Convenient for Use. Specifications: Material:PCB Size: As Picture Shown Main Color: Black Multiplication: 1 to 2 ports or 1 to 4 ports (optional) Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1 Set Extension Cable