StarTech PEXUSB312A2C2V 4-Port USB PCIe Card

Add high-speed USB capacity where internal expansion matters more than desktop clutter. The StarTech PEXUSB312A2C2V installs in a PCIe 3.0 x4 slot and provides four USB 3.2/3.1 Gen 2 ports: two USB-A and two USB-C. With two ASM3142 chips, the card is designed to maintain bandwidth across mixed-speed devices, helping prevent one busy peripheral from dragging down the rest of the bus. This architecture is a strong fit for external SSDs, NVMe enclosures, imaging tools, and service workflows that depend on consistent throughput. Total bandwidth reaches up to 20 Gbps across the card, with up to 10 Gbps per controller. Optional SATA power supports up to 15 W per USB Type-C port and 4.5 W per USB-A port, giving connected devices the headroom they need when bus power alone is not enough. The full-profile bracket suits standard desktop and server chassis, while Windows and Linux support keeps deployment straightforward across mixed environments. For teams that need more than a basic USB add-in card, this model offers the port mix, controller design, and power options that justify a higher-spec expansion path.