STARTECH PEXUSB314A2V2 4-Port USB 3.2 Gen 2 PCIe Expansion Card

Four-port USB 3.2 Gen 2 expansion card

The STARTECH PEXUSB314A2V2 adds four USB Type-A ports running at 10 Gbps each to a desktop or server. It uses two ASM3142 controllers to deliver up to 20 Gbps of aggregate bandwidth across the card. The board fits a standard-profile PCI Express x4 slot or larger and supports Windows, macOS and Linux kernels from 3.5 onward. It targets users who need multiple high-speed connections for external storage or peripherals.

Thermals noise and power draw

The card draws power from the PCI Express slot and an optional SATA power connector for additional current. Total USB power output is rated at 4.5 W at 5 V and 0.9 A per port under the USB 3.2 Gen 2 specification. No active cooling is present, so the board relies on case airflow for thermal management. Acoustic output is negligible because there are no moving parts on the adapter.

Build quality and connectors

The printed circuit board measures 0.7 by 5.9 by 4.7 inches and weighs 4.4 oz, using a full-profile bracket already installed. Four integrated Type-A ports sit along the rear edge for direct cable attachment. An optional SATA power input sits on the board to supplement slot power when multiple bus-powered devices are connected. The dual-controller layout helps maintain bandwidth when mixed-speed devices are used simultaneously.