StarTech 4-Port USB PCIe 10Gbps Expansion Card – PEXUSB312A2C2V

StarTech 4-Port USB PCIe 10Gbps Expansion Card – PEXUSB312A2C2V

Overview:

The StarTech PEXUSB312A2C2V is a PCI Express expansion card that adds four high‑speed USB ports to desktop and server systems via a PCIe slot. It is deployed by system integrators and IT technicians to upgrade workstation and server connectivity where native USB port counts are insufficient for external storage, peripherals, and high‑bandwidth devices. The card provides USB 3.2 Gen 2 performance, enabling up to 10 Gbps per port for demanding data transfer tasks.

This adapter leverages a PCIe 3.0 x4 host interface to deliver combined bandwidth of up to 20 Gbps across its four USB ports, with two USB‑C and two USB‑A connectors. Controller logic (dual ASM3142 controllers) balances throughput among attached devices. Optional SATA power input can supplement port power delivery when the PCIe slot’s power budget is insufficient.

Installed in a full‑height PCIe slot, the card is suitable for enterprise desktops, workstation builds, and server systems that need additional USB connectivity without reconfiguring the motherboard I/O. It supports backward compatibility with legacy USB devices and common operating systems, making it adaptable to mixed‑use environments.

Integration with system management is conducted through native OS interfaces; no special management protocol support is provided. The card installs as a standard PCIe device and enumerates through the operating system’s USB host controller stack, allowing immediate use upon driver recognition.

In practical use, this card expands connectivity for external NVMe/SSD enclosures, high‑speed backup devices, professional audio interfaces, and other peripherals requiring sustained data streams. It is not suitable for applications requiring USB Power Delivery or DisplayPort Alt Mode over USB‑C, as those features are not supported.

Typical Deployment Scenarios:

• Upgrading workstation USB ports for external SSD backup arrays
• Adding USB‑C and USB‑A connectivity in server PCIe slots
• Edge compute platforms requiring additional high‑speed I/O
• Multimedia workstations with mixed‑connector peripherals
• Retrofit older systems to support USB 3.2 Gen 2 devices

Technical Specifications:

Compatibility / Ecosystem:

Compatible PCIe Slots: PCIe 3.0 x4 and higher
Connector Ecosystem: USB‑C and USB‑A devices (backward compatible)
OS Ecosystem: Supports Windows, macOS, and Linux
Power Supply: Optional SATA power input enhances port power delivery