StarTech.com 2 Port PCI SuperSpeed USB 3.0 Card Adapter

"Add 2 USB 3.0 ports to a desktop computer through a PCI slot
The PCIUSB3S2 2-Port PCI to SuperSpeed USB 3.0 Card allows for legacy PCI slots to support the USB 3.0 standard, which is capable of data transfer rates up to 5 Gbps (10x faster than USB 2.0). Using USB 3.0 devices with this Card will allow data transfer rates at up to 1.3 Gbps, double the performance versus using USB 2.0 cards and peripherals.
Backward compatible with USB 2.0 and 1.x devices, this versatile PCI USB 3.0 card will work with any future USB 3.0 devices, while still being able to support older devices.

Designed for older PCI-based systems or computers with only PCI expansion slots left available, this adapter card allows those systems to stay relevant and up-to-date with the latest USB technology.
Backed by a StarTech.com lifetime warranty and free lifetime technical support."
" * SuperSpeed USB 3.0 connectivity with backwards compatibility to USB 2.0/1.x devices from a single PCI card
* Backed by a StarTech.com lifetime warranty and free lifetime technical support
* Using USB 3.0 devices with this PCI Card will allow data transfer rates at up to 1.3 Gbps, double the performance versus using USB 2.0 cards and peripherals"

StarTech.com 2 Port PCI SuperSpeed USB 3.0 Card Adapter, PCI, USB 3.2 Gen 1 (3.1 Gen 1), NEC uPD720200, 5 - 50 °C, -20 - 70 °C, 15 - 90%

StarTech.com 2 Port PCI SuperSpeed USB 3.0 Card Adapter. Host interface: PCI, Output interface: USB 3.2 Gen 1 (3.1 Gen 1). Chipset: NEC uPD720200. Width: 57 mm, Depth: 120 mm, Height: 20 mm. Package width: 140 mm, Package depth: 175 mm, Package height: 30 mm. Data transfer rate: 1300 Mbit/s, Connectivity technology: Wired, Compatible operating systems: Windows XP(32/64-bit)/ Server 2003(32/64-bit)/ Vista(32/64-bit)/ Server 2008 R2/ 7(32/64-bit)