U3X4-PCIE4XG322

Quad Channel 8-port (2-port x 4) USB 3.2 Gen 1x1 (5Gbps) to PCI Express x4 Gen 3 Host Card

Highlights

Host Bus: PCIe x4 Gen 3 (8.0 GT/s)
- Compliant with PCI Express Base Specification Revision 3.0
Four independent USB 3.2 Gen 1x1 (5Gbps) Host Controllers (ASM3042)
- Compliant with Universal Serial Bus 3.0 specification Revision 1.0
- Compliant with Intel’s eXtensible Host Controller Interface (xHCI) specification Revision 1.1
- Each USB 3.2 Gen 1x1 (5Gbps) 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 (70mΩ on-resistance) Single Channel Current-limited Power Switch
- UL File Number E322375 (AP2311)

Introduction

The U3X4-PCIE4XG322 is a Quad channel 8-port USB 3.2 Gen 1x1 (5Gbps) to PCI Express x4 Gen 3 Host Adapter.

U3X4-PCIE4XG322 is designed with Two key components.

8-Lane, 5-Port PCI Express Switch
PCI Express to USB 3.2 Gen 1x1 (5Gbps) Single Chip Host Controller (ASM3042)

Utilizing the standard PCI Express Switch, the 8-Lane/5-Port PCI Express Switch provides the most efficient fan-out solution for integrating four PCI Express toUSB 3.2 Gen 1x1 (5Gbps) Single Chip Host controllers into a small board design. Each USB 3.2 Gen 1x1 to PCI Express Single Chip Host controller takes advantages of 5 Gbps burst rate of 4-lane PCI Express bus in both directions and is fully compliant with PCI Express Base specification r3.0. This solution provides full PCI Express and USB 3.2 functionality and performance.

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	Support two ports of USB 3.2 Up to USB 3.2 Gen1x1 (5Gbps) 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 USB 3.2 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
USB3 cable ports	Eight USB 3 Cable Ports (Std-A Receptacle, USB IF TID 360000055) The Vbus of each USB Port has a 2.0A Single Channel Current-Limited Power Switch for protection 2.0A (70mΩ on-resistance) Single Channel Current-limited Power Switch UL File Number E322375 (AP2311)
USB Bus Power Input	12V Step-Down to 5V from either PCIe 12V or Power Connector 12V (ATA 4-pin or 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).