Products / PCI Express Expansion / PCIe Docking / PCIe x4 to PCIe x1 Slot


PCI Express x4 to four PCI Express x1 slots Docking System

IP4X-2D1X|PCI Express x4 to four PCI Express x1 slots Docking System
  • Two 5.25" ODD (Optical Disk Drive) form factor
  • Four PCIe x1 slots
    • Supports 1-lane PCI Express Bandwidth
    • Compliant with PCI Express base specification revision 2.0
    • PCIe Gen 2: 5 GT/s
  • Provides the PCI Express expansion solution for PCI Express x1 host cards

IP4X-2D1X is a PCI Express (PCIe) x4 to Four PCIe x1 slots docking system. It provides one upstream port supporting x4, and four downstream ports that support x1 operation. IP4X-2D1X is integrated by the following three key parts (IP4X-PCIE4XG201, DB525-PCIE2XD1X20, CB-00592).

  • IP4X-PCIE4XG201
    • Internal four PCIe x1 to PCIe x4 Gen 2 Switch Host Card..
  • Two B525-PCIE2XD1X20
    • Two PCI Express x1 slots Add-On card docking bay.
  • Two CB-00592
    • USB 3.0 2-in-1 Female (10X2_19pin) Cable, L = 60cm.

Utilizing the standard PCI Express Switch, the 8-Lane/8-Port PCI Express Gen 2 (5 Gbps) Switch provides the most efficient fan-out solution for the following configuration:

Technical Specifications


Upstream PCIe interface
  • 4-lane PCI Express
  • Throughput
    • PCIe Gen 1 (2.5GT/s)
    • PCIe Gen 2 (5.0GT/s)
Downstream PCIe interface
  • Two IOI Proprietary Dual-lane Internal PCIe Ports (PCIe-1~2)
    • 10X2_19pin Header (Pitch=2.0mm)
    • 2-lane PCIe (Two PCIe x1)
  • Each Dual-lane Internal PCIe Ports
    • PCIe Gen 1 (2.5GT/s)
    • PCIe Gen 2 (5.0GT/s)
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 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 (for PCB v1.1)

  • 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 Requirements Desktop computer equipped with a PCIe 2.0/3.0 x4, x8, x16 slot
  • 64.5(H)x81(L) mm
  • NW: 48.5g


Upstream host connector
  • One dual-lane Internal PCIe ports ( IOI Proprietary)
    • 10X2_19pin Header (Pitch=2.0mm)
    • 2-lane PCIe (Two PCIe x1)

Downstream Internal PCIe bus interface

  • Two PCIe x1 slots
  • Supports 1-lane PCI Express bandwidth

Power connector

  • One SATA 15pin power connector
Form factor
  • One 5.25" ODD form factor
  • 146.6(W) x 42(H) x 175 (D) mm
  • NW: 343g
Kit includes
  • IP4X-PCIE4XG201
  • Two DB525-PCIE2XD1X20
  • Two CB-00592
  • Overview
Optional Accessories
  • Low Profile PCI Bracket (BR-00226-01)