Do the USB-C connectors support USB3.2? Language is a little ambiguous in Specs and Features.

Yes, the USB-C connectors support USB 3.2. The card provides 7 external USB 3.2 Gen 2 ports, including 3 USB Type-C ports.

AUBEAMTO PCIe to USB 3.2 Gen 2 Card with 20 Gbps Bandwidth 7 USB Ports (4 USB Type-A and 3 USB Type-C Ports), PCI Express (PCIe) Expansion Card USB Card for Desktop PC

Limited time offer, ends 05/23 By AUBEAMTO

7-Port PCIE USB Card: With 3x USB C ports and 4x USB-A 3.2 ports extended via PCI Express X4 slots, you can connect keyboards, mouse, external hard drives, CD/DVD drives, USB printers, scanners, game controllers, USB VR, digital cameras, and more. (USB-C port contains only data signal, not video signal.)
Super Speed Transmission Rate: Support up to 10Gbps transfer rate, the overall rate is half faster than USB 3.0 version (5Gbps) and can transfer copied high-definition video, music, photos, and data files, helping you achieve higher s efficiency. (Note: The actual transfer speed may be limited by the connected device)
Wide Compatibility: Support Windows 10/8/7/XP/Server, Linux and Mac OS 10.8.2(and higher). USB card are PCIe 3.0 and PCIe 2.0 compliant motherboards for PCI Express x4, x8, or x16 slots. Note: Windows 7/XP/Vista/Server, need to install the driver, Windows 10 and Mac OS 10.8.2 or above most don't need the driver.

PCIe USB 3.2/3.1 Gen 2 Card 7 Ports

7-Ports Expansion Card: PCI-E expansion card provides 7 external USB 3.2 Gen 2 Ports (4 USB Type-A and 3 USB Type-C Ports) for your computer. You can connect a keyboard, mouse, external hard drives, CD/DVD drives, webcams, USB printers, scanners, game controllers, USB VR, digital cameras, etc
10Gbps Transmission Rate: One USB Type-C port and three USB Type-A ports share 10Gbps bandwidth, and the rest three ports share another 10Gbps bandwidth, with a total bandwidth of up to 20Gbps. Each port supports transmitting data at a rate of up to 10Gbps when used solely. Note: The USB expansion card only supports data transfer, Not PD fast charging and video signal transfer (DP, HDMI, VGA display conversion) and USB-C Thunderbolt protocol

Widely Compatibility: The card is compatible with Windows 7/8/10/11 (32/64 bit) and Mac OS 10.8.2 and above. Perfect for HP windows 11 desktop,Dell 8950,MacPro 4.1/5.1,Lenovo P520. Note: Windows XP/Vista/7, Server, requires driver installation, Windows 10/11 and Mac OS and Linux don't need drivers. If your computer can not be recognized by windows 11 or Mac os with any driver, Please contact us anytime
Stable and Easy to Use: The internal USB card is provided from the motherboard through the PCI Express slot to ensure a stable connection and improve data transmission speed. Will not lose the connection problem like an external USB Hub. Quick and easy installation, a simple solution for connecting to and using USB 3.2 devices on your standard desktop

No External Power Adapter: Users do not need to plug any additional power cable on from power source and get 5V/12A max power supply for high-power consuming device (Device only, NOT support BC 1.2 charging) such as HDD/SSD enclosure, VR sensor etc