IOIUSB | U3X8-PCIE8XE111 | Octad Channel 32-port (4-port x 8) USB 3.0 to PCI Express x8 Gen 2 Host Card


Octad Channel 32-port (4-port x 8) USB 3.0 to PCI Express x8 Gen 2 Host Card

Octad Channel 32-port (4-port x 8) USB 3.0 to PCI Express x8 Gen 2 Host Card


  • Host Bus: PCIe x8 Gen 2 (40.0 Gb/s)
    • Compliant with PCI Express Base Specification Revision 2.0
  • Eight independent USB 3.0 Host Controllers
    • Compliant with Universal Serial Bus 3.0 specification Revision 1.0
    • Compliant with Intel’s eXtensible Host Controller Interface (xHCI) specification Revision 1.0
    • USB 3.0 Host Controller supports four downstream ports
  • thirty-two USB 3.0 Cable Ports (A-type Receptacle)
    • Provides USB 3.0 cable port lock mechanism
  • Dual 5.25" ODD Form Factor (DU3X2-IPCIE2XG211 )


The U3X8-PCIE8XE111 is an Octad channel 32-port (4-port x 8) USB 3.0 to PCI Express x8 Gen 2 Host Card.

U3X8-PCIE8XE111 is integrated by the following three key parts (IP8X-PCIE8XG201,DU3X2-IPCIE2XG211, CB-00592).

  • IP8X-PCIE8XG201
    • Internal eight PCIe x1 to PCIe x8 Gen 2 Switch Host Card.
  • Two DU3X2-IPCIE2XG211
    • Four PCI Express x1 to USB 3.0 Single Chip Host Controllers ( FRESCO FL1100; USB IF TID 380000026).
  • Four CB-00592

Utilizing the standard PCI Express Switch, the 16-Lane/16-Port PCI Express Switch provides the most efficient fan-out solution for integrating Sixteen 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 8-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.

Technical Specifications


Upstream PCIe interface
  • 8-lane PCI Express
  • Throughput
    • PCIe Gen 1: 20 Gbps
    • PCIe Gen 2: 40 Gbps
Downstream PCIe interface
  • Four IOI Proprietary Dual-lane Internal PCIe Ports (PCIe-1~4)
    • 10X2_19pin Header (Pitch=2.0mm)
    • 2-Lane PCIe
  • Throughput of each lane
    • PCIe Gen 2: 5 Gbps
Key Features
  • Standards 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
    • 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
    • UPCIe LED1: Upstream x1 Status LED
    • UPCIe LED4: Upstream x4 Status LED
    • UPCIe LED8: Upstream x8 Status LED
  • Downstream Lane Status LEDs
    • LEDPE1-1: Downstream Lane 11 Status LED
    • LEDPE1-2: Downstream Lane 10 Status LED
    • LEDPE2-1: Downstream Lane 9 Status LED
    • LEDPE2-2: Downstream Lane 8 Status LED
    • LEDPE3-1: Downstream Lane 14 Status LED
    • LEDPE3-2: Downstream Lane 15 Status LED
    • LEDPE4-1: Downstream Lane 12 Status LED
    • LEDPE4-2: Downstream Lane 13 Status LED
  • SW1: PCIe Port Configuration
    • 2,4: ON 1,3: OFF
      x8,x1,x1,x1,x1,x1,x1,x1,x1 (default)
  • SW2_1~3: Select Upstream NT Port
    • OFF/ON/ON : Port 1 (default)
  • SW2_4: Non-Transparent Mode
    • OFF: Disabled NT mode (default)
    • ON: Enable
Computer Platform Requirements Desktop computer equipped with a PCIe 2.0/3.0 x8, x16 slot


PCI Express
(IOI Proprietary)
  • Two Dual-lane Internal PCIe Ports (IOI Proprietary)
    • 10X2_19pin Header (Pitch=2.0mm)
    • PCIe x2
  • Throughput of each lane
    • PCIe Gen 2: 5 Gbps
  • Compliant with PCI Express Base Specification Revision 2.0
USB Features
  • Compliant with USB 3.0 Specification Revision 1.0
  • Compliant with Extensible Host Controller Interface (xHCI) Specification revision 1.0
  • 16 downstream USB ports support SS/HS/FS/LS data rates (5Gbps/ 480Mbps/ 12Mbps/ 1.5Mbps)
  • Supports UASP (USB Attached SCSI Protocol)
  • Supports xHCI debug capability
  • Support for Ultra High-performance isochronous applications
  • Support for Latency Tolerance Tolerance Messaging (USB)
USB Data Transfer Rate
  • Low-speed (1.5 Mbps)
  • Full-speed (12.0 Mbps)
  • High-speed (480.0 Mbps)
  • Super-speed (5.0 Gbps)
Number of Ports Sixteen USB 3.0 (Standard A-type Receptacle) cable ports (Provides USB 3.0 cable port lock mechanism)

USB Bus Power Input (5V & 12V)

Either Big IDE 4-pin DC Power Connector 
or/and SATA 15pin Power Connector