StarTech PEXUSB3S11 2-Port USB 3.0 PCIe Expansion Card

Overview

The StarTech PEXUSB3S11 is a single-slot PCI Express 2.0 expansion card that adds one external and one internal USB 3.2 Gen 1 (USB 3.0) port to a desktop PC — a direct fix when you're running out of USB bandwidth or need to provision a dedicated high-speed internal connection for a capture device, storage module, or front-panel USB header. Built around the proven Renesas PD720202 controller, it delivers up to 5 Gbps throughput per port, roughly ten times the ceiling of USB 2.0 — which matters when you're pulling footage from a high-capacity flash drive or connecting a USB 3.0 capture device that saturates older ports.

The standard profile card form factor fits any full-height desktop PCIe slot, and at 37 grams it installs in minutes without tools beyond a single screw. Operating range of 0°C to 50°C covers standard rack-adjacent or desktop environments without concern.

Key Features

• 5 Gbps USB 3.2 Gen 1 throughput: Each port runs at the full USB 3.0 bandwidth ceiling — transferring a 25GB video archive that would take roughly 8 minutes on USB 2.0 completes in under a minute. Critical when pulling daily recordings from USB-attached storage.
• Renesas PD720202 chipset: This controller has a long track record of stable driver support across Windows and Linux distributions, meaning fewer compatibility headaches on legacy or mixed OS environments. It's not an off-brand controller — driver updates and OS compatibility have been maintained consistently.
• 1 external USB Type-A port: Mounts flush on the card bracket — plug in USB 3.0 external hard drives, flash drives, or security dongles directly at the back of the workstation without reaching for a front panel.
• 1 internal USB Type-A port: Routes a USB 3.0 connection inside the chassis — useful for connecting an internal USB 3.0 storage device, a hardware security key on a locked-down system, or a dedicated capture card that expects an internal header without an external cable run.
• PCI Express 2.0 x1 interface: Installs in any available PCIe x1, x4, x8, or x16 slot — PCIe is backward and forward compatible by slot size, so even older motherboards with PCIe 1.x slots will accept the card (at slightly reduced theoretical ceiling, which USB 3.0's 5 Gbps doesn't approach in practice).
• Standard profile bracket: Fits full-height desktop tower and rack-mount workstation cases without modification. Low-profile bracket compatibility is not confirmed in evidence — verify chassis clearance before ordering for small-form-factor builds.
• 0°C to 50°C operating temperature: Suited for conditioned server rooms, control rooms, and standard office environments. Not rated for unconditioned outdoor enclosures or industrial extremes.
• Lifetime warranty: StarTech backs this card with a lifetime warranty — uncommon for an expansion card at this price tier and meaningful for deployments where swapping hardware mid-project has a real labor cost.

Integration and Compatibility

The PEXUSB3S11 installs in any PCIe 2.0 or later slot and is compatible with Windows operating systems with native driver support; the Renesas PD720202 chipset also has Linux kernel driver support for integrators deploying on Ubuntu or CentOS-based VMS workstations. No external power connector is required — the card draws from the PCIe slot directly. USB 3.2 Gen 1 is fully backward compatible with USB 2.0 and USB 1.1 devices, so existing peripherals continue to function at their native speed on the new ports.

For security integrators, this card is a practical addition to workstations used for network video recorder management or local footage review — particularly when the workstation needs a dedicated high-speed port for a USB 3.0 backup drive without competing with the system's native USB controller for bandwidth. It also pairs naturally with PoE switches in network closets where the adjacent workstation needs expanded USB for configuration and backup tasks.

Explore the full StarTech connectivity lineup for rackmount, cabling, and infrastructure accessories that complement this card.

Frequently Asked Questions

Q: Does the PEXUSB3S11 require an external power connector?

A: No. The card draws power directly from the PCIe slot — no SATA or Molex power cable is needed.

Q: What is the warranty on the PEXUSB3S11?

A: StarTech covers the PEXUSB3S11 with a lifetime warranty.

Q: Will the PEXUSB3S11 fit in a low-profile or small-form-factor case?

A: The card ships with a standard profile (full-height) bracket. Low-profile bracket compatibility is not confirmed in the available specifications — verify your chassis clearance before ordering if you're working with a compact build.

Q: Is the PEXUSB3S11 compatible with Linux?

A: The Renesas PD720202 chipset used in the PEXUSB3S11 has established Linux kernel driver support, making it a practical choice for VMS workstations running Linux-based operating systems. Verify the specific kernel version compatibility for your distribution.

Q: What is the maximum data transfer speed on the PEXUSB3S11?

A: Each port on the PEXUSB3S11 supports up to 5 Gbps throughput via USB 3.2 Gen 1 — approximately ten times the maximum bandwidth of USB 2.0.

Q: Can I use a USB 2.0 device on the PEXUSB3S11?

A: Yes. USB 3.2 Gen 1 is backward compatible with USB 2.0 and USB 1.1 devices. Older peripherals will operate at their native speed on the PEXUSB3S11 ports.

Ted Perry

When integrators ask me about USB expansion for security workstations, the PEXUSB3S11 comes up consistently because of one detail that matters in practice: the Renesas PD720202 chipset. Generic PCIe USB cards using unknown or off-brand controllers cause driver grief on Windows Server and Linux VMS installs — the PD720202 avoids that. Paired with the 5 Gbps ceiling per port, this card handles USB 3.0 backup drives and capture devices without bandwidth contention against the system's native controller.

Technical Highlights:

• 5 Gbps per port (USB 3.2 Gen 1): Transferring a 25GB recorded footage archive takes under a minute versus roughly 8 minutes on USB 2.0 — a real time savings on daily backup workflows.
• Internal USB Type-A port: Routes a clean internal connection for hardware security keys or internal USB 3.0 storage on locked-chassis workstations — no external cable run through the case.
• Lifetime warranty: StarTech backs this card for life, which removes the part-replacement cost concern for long-term deployments in attended control rooms.

Deployment Considerations:

• Operating temperature ceiling is 50°C — suitable for conditioned control rooms and server closets, but don't install this in an uncooled outdoor enclosure or industrial cabinet without verifying ambient temps stay within range.
• Standard profile bracket only — if you're retrofitting a compact or small-form-factor workstation, confirm chassis height before ordering. A low-profile bracket is not confirmed in the specifications.

The PEXUSB3S11 is a well-suited addition to a VMS review workstation or security operations center PC where the native USB ports are already occupied by input devices and you need a clean, dedicated high-speed connection for a USB 3.0 backup or evidence-transfer drive — without touching the motherboard USB controller's bandwidth budget.