The 4 Port USB 3.0 PCI-e x1 Card by IO Crest is a versatile and high-quality interface card designed for expanding USB 3.0 ports on a computer. With its x4 card type and 4 ports of external interfaces, this model (SY-PEX20136) offers ample room for connecting multiple USB devices. Compatible with both PCI and USB 3.0 ports, this card is a practical addition to enhance the functionality of a computer system. Made in China, this product ensures reliable performance and durability for all your USB connectivity needs.