The PCIUSB3S4 4-Port PCI to USB 3.2 Gen 1 Card enables legacy PCI slots to support the SuperSpeed USB 3.2 Gen 1 standard, which is capable of data transfer rates up to 5 Gbps. Using USB 3.2 Gen 1 devices with this card will increase data transfer rates with up to 1.3 Gbps of available bandwidth (PCI bus limit) - more than doubling performance compared to a USB 2.0 connection. Note: Some newer PCs may use a PCIe to PCI bridge which can cause unexpected compatibility issues with this product. This versatile USB 3.2 Gen 1 adapter includes an optional SATA power connector which allows each USB port to deliver up to 900mA of power to connected USB 3.2 Gen 1 devices - suitable for even the most power hungry devices. A perfect solution for older PCI-based systems or computers with only PCI expansion slots remaining, the card allows those systems to stay relevant and up-to-date with the latest USB technology. The card is also backward compatible with USB 2.0 and 1.x devices, so it will not only work with any future USB 3.2 Gen 1 devices, but will also support older devices. The PCIUSB3S4 4-Port PCI USB 3.2 Gen 1 Card is backed by StarTech.com lifetime warranty and free lifetime technical support. More from the Manufacturer More from the Manufacturer