U31X2-PCIE4XG322 | 4-port Std-A USB 3.2 to PCI Express x4 Gen 3 Host Card | Asmedia ASM3142

U31X2-PCIE4XG322

Dual Channel 4-port (2-port x 2) USB 3.1 Gen 2 (10Gbps) to PCI Express x4 Host Card

Highlights

Host Bus: PCIe x4 Gen 3 (8.0 GT/s)

Compliant with PCI Express Base Specification Revision 3.0

Dual independent USB 3.1 Gen 2 (10Gbps) Host Controllers (Asmedia ASM3142, USB IF TID 5080000010)

Compliant with Universal Serial Bus 3.1 Specification Revision 1.0
Compliant with Intel’s eXtensible Host Controller Interface (xHCI) specification Revision 1.1
Each USB 3.1 Gen 2 (10Gbps) Host Controller supports two Cable Ports (Standard-A Receptacle)

The Vbus of each USB Port has a 2.0A Single Channel Current-Limited Power Switch for protection
- 2.0A (62mΩ on-resistance) Single Channel Current-limited Power Switch
- UL File Number E328191

Introduction

The U31X2-PCIE4XG322 is a Dual Channel 4-port (Std-A) USB 3.1 Gen 2 to PCI Express x4 Gen 3 Host Card

U31X2-PCIE4XG322 is designed with Two key components.

8-Lane, 3-Port PCI Express Gen 3 Switch.
PCI Express to USB 3.1 Single Chip Host Controller (Asmedia ASM3142, USB IF TID 5080000010)

Technical Specifications

PCI Express	PCI Express 4-lane Gen 3 (8.0GT/s) Compliant with PCI Express Base Specification Revision 3.1 Compliant with PCI Express CEM Specification Revision 3.0 Compliant with Advanced Configuration Power Interface (ACPI) Specification Support up to 512-Byte Max Payload Size
USB Features	One Channel support two ports of USB 3.1 Up to USB 3.1 Gen 2 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 USB 3.1 and USB 2.0 Link Power Management Support Control, Bulk, Stream, Interrupt, Isochronous transfer type Support independent port power control Support overcurrent detection Integrate Spread Spectrum Controller for USB 3.1 interface Backward compatible with Legacy USB function and device Support the Debugport
USB Data Transfer Rate	USB 3.1 Gen 2 (10G), USB 3.1 Gen 1 (5G), USB 2.0 (480MB)
Number of USB Ports	Four independent USB 3 Cable Ports (Std-A Receptacle, USB IF TID 360000145) The Vbus of each USB Port has a 2.0A Single Channel Current-Limited Power Switch for protection (IC-S0372H-03) 2.0A (62mΩ on-resistance) Single Channel Current-limited Power Switch UL File Number E328191
USB Bus Power Input	12V Step-Down to 5V from either PCIe 12V or Power Connector 12V (J1: ATA 4-pin or J2: SATA 15-pin) The USB Bus power (5V) are step-down from 12V and the 12V input might from either PCIe Edge Connector or Auxiliary Power Connectors (J1 & J2). Note: If the PCIe Slot can’t supply 12V current high enough then you have to attach the Auxiliary Power from either J1 (ATA 4-pin) or J2 (SATA 15-pin).