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Quad channel 8-port (2-port x 4) USB 3.0 to PCI Express x4 Gen 2 Host Card


The V2U3X4-PCIE4XE303 is an Quad channel 8-port (2-port x 4) USB 3.0 to PCI Express x4 Gen 2 Host Card.

V2U3X4-PCIE4XE303 is integrated by the following three key parts (IP4X-PCIE4XG201,DU3X2-IPCIE2XG201, CB-00592).

  • V2IP4X-PCIE4XE31
    • Internal four PCIe x1 to PCIe x4 Gen 2 Switch Host Card.
  • V2DU3X2-IPCIE2XG201
    • Quad PCI Express to USB 3.0 Single Chip Host Controllers (Renesas uPD720202; USB IF TID 380000043).
  • Two CB-00592

Utilizing the standard PCI Express Switch, the 8-Lane/5-Port PCI Express Switch provides the most efficient fan-out solution for integrating quad PCI Express to USB 3.0 Single Chip Host controllers into a small board design. Each USB 3.0 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 r2.0. This solution provides full PCI Express and USB 3.0 functionality and performance.

The Highlight Features

  • 5.25″ ODD Form Factor
  • Host Bus: PCIe x4 Gen 2 (5.0 GT/s)
    • Compliant with PCI Express Base Specification Revision 2.0
  • Quad independent USB 3.0 Host Controllers
  • Eight USB 3.0 Cable Ports (A-type Receptacle)
      • Provides USB 3.0 cable port lock mechanism

    USB 3.0 Standard A-type lock mechanism

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Upstream PCIe interface4-lane PCI Express
: PCIe Gen 1: 10 Gbps
: PCIe Gen 2: 20 Gbps
Downstream PCIe interfaceTwo IOI Proprietary Dual-lane Internal PCIe Ports (PCIe-1~2)
: 10X2_19pin Header (Pitch=2.0mm)
: 2-Lane PCIe (Two PCIe x1)
Throughput of each lane
: PCIe Gen 2: 5 Gbps
Key FeaturesStandards Compliant
: PCI Express Base Specification r2.0 (Backwards compatible with PCIe r1.0a/1.1)
:PCI Power Management Spec r1.2
:Microsoft Vista Compliant
:Supports Access Control Services
:Dynamic link-width control
:Dynamic SerDes Speed Control
High Performance
:Non-blocking internal architecture
:Full line rate on all ports
:Cut-Thru latency: 140ns for Link widths of x4 to x1
:Maximum Payload Size - 2,048 bytes
:Read Pacing (intelligent bandwidth allocation)
:Dual Cast
:Dynamic Buffer Pool Architecture for faster credit updates
PCI Express Power Management
:Link power management states: L0, L0s, L1, L2/L3 Ready, and L3 (with Vaux not supported)
:Device power management states: D0 and D3hot
:Active State Power Management (ASPM)
Quality of Service (QoS)
:Two Virtual Channels (VC) per port
:Eight Traffic Classes per port
:Weighted Round-Robin Port & VC Arbitration
Lane Status LEDs

Blink: Gen 1 speed
Solid: Gen 2 speed
Upstream Lane Status LEDs
: LED-Lane0: Upstream x1 Status LED
: LED-Lane3: Upstream x4 Status LED
Computer Platform RequirementsDesktop computer equipped with a PCIe 2.0/3.0 x4, x8, x16 slot
Physical Dimensions64.5(H)x81(L)mm
NW: 48.5g
  • Computer with PCI Express slot (x4, x8, x16)

For the best performance (5.0 GT/s), It should be installed in a PCIe Gen 2 compliant slot in the host computer.  Most computers have PCIe Gen 2 (5.0 GT/s) throughput on x8 or x16 slots.
A PCIe Gen 1 compliant slot reaches up to 2.5 GT/s throughput




  • If OS is Windows 8 or later , there are inbox driver for Renesas USB 3.0 Host Controller. OS will detect the presence of new hardware and then install Renesas USB 3.0 Host Controller driver automatically.
  • USB 3.0 Host Drivers Kit (x86 and x64) for
    • Windows XP
    • Windows Vista
    • Windows 7
    • Windows Server 2008 Release 2


Content: USB 3.0 Host Controller Driver Kit (x86 and x64) For Windows XP, VISTA, 7 and Server 2008 Download


* Specifications subject to change without prior notice

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