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Green PCB expansion card with two blue USB ports and a metal bracket

STARTECH

STARTECH PEXUSB3S25 2 Port PCI Express USB 3.0 Expansion Card

SKU CH-MT7W-2YMY0 MPN PEXUSB3S25

Adds two 5 Gbps USB 3.0 ports with UASP and LP4 power to a PCI Express desktop, includes low-profile bracket

  • TypePCI Express to USB Card
  • External USB Ports2x USB Ports
  • StandardUSB 3.0
  • Data Transfer Rate5 Gbps
  • FeaturesBus Type: PCI Express Card Type: Standard Profile (LP bracke
  • Weight0.35

Model LP4 - NEC 2 Ext

  • Adds two SuperSpeed USB 3.0 ports at 5 Gbps
  • Includes low-profile bracket for compact PC builds
  • Powered via LP4 connector for stable device operation
  • Supports USB Battery Charging 1.2 for faster charging
  • Built on NEC uPD720202 controller with UASP support

Two SuperSpeed USB 3.0 Ports

This PCI Express expansion card adds two external USB 3.0 ports to a desktop computer. It uses the NEC uPD720202 controller and fits a standard-profile slot with a low-profile bracket included. The card draws auxiliary power through an LP4 connector.

Upgrade from USB 2.0 Header Limits

The card replaces reliance on internal USB 2.0 headers or slower add-in cards by providing native 5 Gbps throughput. The jump is worthwhile when external drives or peripherals need the higher signalling rate and UASP support for reduced protocol overhead.

5 Gbps Bandwidth per Port

Each port delivers up to 5 Gbps and supports the USB Battery Charging 1.2 specification for faster device charging. Headroom is sufficient for external SSDs and high-capacity hard drives; sustained write workloads that exceed the PCIe lane allocation will saturate the link.

Highlights

  • Adds two SuperSpeed USB 3.0 ports at 5 Gbps
  • Includes low-profile bracket for compact PC builds
  • Powered via LP4 connector for stable device operation
  • Supports USB Battery Charging 1.2 for faster charging
  • Built on NEC uPD720202 controller with UASP support

Specifications

BrandStarTech.com
ModelPEXUSB3S25
TypePCI Express to USB Card
External USB Ports2x USB Ports
StandardUSB 3.0
Data Transfer Rate5 Gbps
FeaturesBus Type: PCI Express
Card Type: Standard Profile (LP bracket incl.)
Chipset ID: NEC - uPD720202
Industry Standards:
USB 3.0 Specification Rev. 1.0
USB Battery Charging Specification Rev. 1.2
PCI Express Base Specification Rev. 2.0
Intel xHCI Specification Rev. 1.0
Interface: USB 3.0
Port Style Integrated on Card
UASP Support
Add 2 SuperSpeed USB 3.0 ports with LP4 power to your PCI Express-enabled PC
Compatible Lenovo ThinkCentre M72e / Dell OptiPlex 3010
2 Port PCI Express USB 3.0 Card Adapter w/ UASP / 2Port USB 3.0 Controller Card
USB 3 PCIe Card / PCIe USB 3.0 Card
LP4 Powered U
Weight0.35
Shipping weight0.15 kg
Package size168 × 140 × 30 mm

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Questions about this item

Will this card fit in a standard PCI Express slot and does it include a low-profile bracket?

Yes, the card uses a standard PCI Express x1 slot and ships with a low-profile bracket for half-height cases.

Do I need to connect the LP4 power connector on the card for the USB ports to work?

The LP4 connector must be plugged into a spare power-supply lead; without it the controller cannot deliver the 5 Gbps data rate or the battery-charging current.

Which chipset does this card use and will it need a driver update later?

The card uses the NEC uPD720202 controller; Windows 10 and later include native support so no separate driver install is required.

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