5 Port Hi-Speed USB 2.0 PCI Adapter Card For Apple PowerMac G3 / G4 OS X 10.2.8+ | eBay
IOGEAR - GIC251U - 5-Port USB 2.0 PCI Card
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StarTech.com 4 Port USB 2.0 PCIe Card - Low Profile (PEXUSB4DP)
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StarTech PEXUSB4DP 4 Port PCI Express Low Profile High Speed USB Card - PCIe USB 2.0 Card - PCI-E USB 2.0 Card - Newegg.com
4 Independent Port PCIe USB Adapter Card - USB 2.0 Cards | Add-on Cards & Peripherals | StarTech.com
10Gbps USB 3.2 Gen 2 PCI Express PCIe Card w/ 1x USB-C & 1 x USB-A Con – DriverGenius - 一驱纵横
Buy StarTech.com 7 Port PCI to USB 2.0 Controller Adapter Card - at Connection Public Sector Solutions
OWNSUN PCI-E to Type C (2),Type A (3) USB 3.0 5-Port PCI Express Expansion Card +Expanding 2 USB 3.0 Ports with Internal 19-Pin Connector for Window 7/8/10/XP/Vista - Newegg.com
Amazon.com: Syba 5 Port (4 External & 1 Internal) USB 2.0 PCI Card, PCI Expansion to USB 2 Adapter Hub Controller VIA VT6212 SD-VIA-5U : Electronics
Delock Products 89135 Delock PCI Express Card > 4 x external + 1 x internal USB 2.0