LP 4-Port SuperSpeed USB 3.0 PCIe Card - Quad Core

4-port SuperSpeed USB 3.0 PCle Host Card - NEW

USB 3.2 Gen 2x2 PCIe Card - USB-C 20Gbps - USB 3.0 Cards, Add-on Cards & Peripherals

High Speed 4 Ports PCI-E Riser Card Portable USB 3.0 PCI-Express Controller Adapter For Windows 7/Vista/XP 32/64-bit - AliExpress

Protronix 2-Port USB 3.0 Low Profile PCI-Express Host Controller Card : Electronics

Add four USB 3.0 ports with two independent channels, LP/SATA power, and charging support to your PC through a PCI Express slot. The PEXUSB3S42V 4-Port PCI Express USB 3.0 Card lets you add four USB 3.0 ports with two dedicated 5 Gbps channels to your PCIe x4-enabled PC. This independent port architecture improves USB 3.0 performance by transferring data on two individual channels to your computer, giving you faster file transfers.

StarTech.com 4 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter

StarTech.com 4 Port USB 3.0 PCIe Card w/ 4 Dedicated 5Gbps Channels (USB 3.2 Gen 1) - UASP - SATA / LP4 Power - PCI Express Adapter Card (PEXUSB3S44V) : Electronics

Usb 3.1 Pci-express Card 1 Port Reversible Type-c + 2 Port Usb 3.0 With Sata 15pin Connector Gen 2 10gbps Add On Card Riser Card - Add On Cards & Controller Panels - AliExpress

Adapter cards and Accessories at Overclockers UK

Shop StarTech.com 4 Port PCI SuperSpeed USB 3.0 Adapter Card with SATA/SP4 Power - Quad Port PCI USB 3 Controller Card (PCIUSB3S4) - USB adapter - PCI-X - USB 3.0 x 4

Shop StarTech.com 4 Port PCI SuperSpeed USB 3.0 Adapter Card with SATA/SP4 Power - Quad Port PCI USB 3 Controller Card (PCIUSB3S4) - USB adapter - PCI-X - USB 3.0 x 4