4-Port USB PCIe Card - 10Gbps USB-C and USB-A Expansion

In this review the StarTech 4-Port USB PCIe card is presented as a practical upgrade for desktop and server users who need high-speed external connectivity. The biggest reason to buy is straightforward: it adds two 10Gbps USB-C ports and two 10Gbps USB-A ports on a single full-profile PCIe card, delivering up to 20Gbps total bandwidth across four ports for external SSDs, drives, and high-bandwidth peripherals. Installation is simple and the card supports modern OS auto-install, making it a solid fit for users who need fast USB 3.2 Gen 2 performance.

Key Features

• Dual ASM3142 controllers: Provides aggregated throughput so the card can deliver up to 20Gbps total bandwidth across the four USB ports for demanding transfers.
• Two USB-C and two USB-A ports: Lets users connect a mix of modern USB-C devices and legacy USB-A peripherals without adapters.
• 10Gbps per port: USB 3.2 Gen 2 speeds reduce transfer time for large files and external SSD workflows compared with 5Gbps ports.
• Optional SATA supplemental power: Allows the card to supply up to 5V 3A/15W per USB-C port and 5V 0.9A/4.5W per USB-A port when motherboard power is limited.
• Broad compatibility: Installs in a full-profile PCIe 3.0 x4 slot and supports Windows, macOS and Linux with auto driver install on modern systems.
• UASP support: Improves storage device performance when used with external SSDs and NVMe enclosures that support the protocol.

Who It's For

This card is ideal for content creators, workstation users, and IT pros who need more high-speed USB ports for external SSDs, backup drives, or multiple peripherals. The combination of USB-C and USB-A ports makes it convenient for mixed device environments where both modern and legacy devices are used.

Users with very compact or mini-ITX systems without a full-profile slot or those who only need modest 5Gbps speeds should look elsewhere. Also, machines that only offer PCIe 2.0 will see lower performance than PCIe 3.0 systems, so buyers should ensure their motherboard has a suitable x4 slot.

Pros & Cons

Pros

• High total throughput with dual controllers, enabling strong simultaneous transfer performance.
• Two USB-C and two USB-A 10Gbps ports cover a wide range of devices without adapters.
• Optional SATA power input supports higher-power USB-C devices and reduces power-related issues.
• Easy installation and broad OS compatibility with auto driver install on modern systems.

Cons

• Some customers reported mixed behavior with power delivery on USB-C ports, so heavily powered devices may require attention to supplemental power.
• Performance is limited by PCIe 2.0 slots, so older systems may not see full 10Gbps speeds.

Specifications

Our Verdict

The StarTech 4-Port USB PCIe card is a practical choice for users who need reliable, high-speed USB 3.2 Gen 2 ports on a desktop or server. It offers a useful mix of USB-C and USB-A connectors, strong aggregated bandwidth via dual controllers, and optional supplemental power for demanding devices. For those with a PCIe 3.0 x4 slot, it is a worthwhile upgrade to eliminate USB bottlenecks and improve external storage workflows.

Frequently Asked Questions

Will this card work in a PCIe 2.0 slot?
Yes, but performance will be lower than in a PCIe 3.0 x4 slot; you may not reach full 10Gbps per port.

Can I power high-draw USB-C devices from the card?
Supplemental SATA power can provide up to 5V 3A/15W per USB-C port, but very high-power devices may still require their own power source.

Does it need drivers?
The card supports auto driver install on Windows 8 and newer, macOS, and Linux, so most systems will configure it automatically.