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PCIe x4 2-port USB 3.1 Type-A USB Host Card with 3A/port

  • Product Code: PX4-U31-2A-3A
  • Availability: In Stock
  • Ships: Typically within 3 Business Days
  • Guarantee: 30-day Return and Money Back


PX4-U31-2A-3A is a PCIe x4 2-port USB 3.1 Gen2 10Gbps USB Host Card. It is designed with the new generation Universal Serial Bus XHCI host controller, bridging PCI Express to USB3.1 Gen-II, compliant with USB 3.1 Specification Revision 1.0 and Intel eXtensible Hot Controller Interface specification revision 1.1,. PX4-U31-2A-3A also supports the new feature of USB 3.1 Gen2, named Multiple INs to achieve fully utilization rate of 10Gbps data rate, tacking advantage of the available bandwidth of USB 3.1 Gen2 bus.

PX4-U31-2A-3A supports two USB 3.1 Gen-II (10Gbps) ports and perform trusting high speed bandwidth with PCIe Gen-III x2 supporting. It also supports backward compatible with legacy USB function and devices, compliant with UASP (USB Attach SCSI Protocol) Revision 1.0, supporting the XHCI debug capability. Equipped with power management chip ASMedia ASM3142, the card can supply power with output of 5V/3A to each USB 3.1 device.

PX4-U31-2A-3A supports the proprietary driver for Windows 7 and inbox driver for Windows 8.0, Windows 8.1, Windows 10 and various Linux Kernels.


  • Support PCI Express Gen-III x2
  • Support high bandwidth performance with low latency
  • Support PCI Express Link power management
  • Compliant with PCI Express Base 3.0 Specification
  • Compliant with PCI Express card Electromechanical 2.0 specification
  • Compliant with PCI Express Mini Card Electromechanical 1.2 specification
  • Compliant with PCI Bus Power Management Interface Specification Revision 1.2
  • Compliant with PCI Local Bus Specification Revision 3.0
  • Integrate Spread Spectrum Controller for PCI Express interface
  • Overclock capability on PCI Express bus
  • Support two ports of USB 3.1
  • Up to USB3.1 Gen-II 10Gbps
  • Compliant with Universal Serial Bus 3.1 Specification Revision 1.0
  • Compliant with Universal Serial Bus Specification Revision 2.0
  • Compliant with USB Attached SCSI Protocol Revision 1.0
  • Support Multiple INs function
  • Support USB3.1 and USB2.0 Link Power Management
  • Support Control, Bulk, Stream, Interrupt, Isochronous transfer type
  • Support independent port power control
  • Support overcurrent detection
  • Integrate Spread Spectrum Controller for USB3.1 interface
  • Backward compatible with Legacy USB function and device
  • Support the Debugport


  • Chipset: Asmedia ASM3142
  • Host Bus: PCIe x4 (x2 mode) Gen 3
  • Connector
    • 1 x 15-pin, SATA power connector, Input
    • 2 x 9-pin, USB 3.1 Gen 2, Type A, Female, Output
  • Compliance: USB 3.1 Gen 2 and PCI Express 3.0 specification
  • USB data transfer rate: 10Gbps / 5Gbps / 480Mbps / 12Mbps / 1.5Mbps
  • Power output: Up to 3A, each USB port
  • Form factor chassis installation: Full size and low-profile
  • OS Compatibility
    • Windows® 7, 8, 8.1, 10
    • Windows Server® 2008 R2, 2012, 2012 R2, 2016, 2019
    • Linux® 3.5 to 4.11.x LTS version only
  • Environmental Conditions
    • Operating temperature: 32 to 140 degrees F
    • Storage temperature: 14 to 158 degrees F
    • Relative humidity: 5 to 90% RH (no condensing)
  • Certifications/Standards: FCC, CE, RoHS

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