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EP8X-PCIE8XG302

External PCIe (SFF-8644 1x2) to PCIe x8 Gen 3 Switch Host Card

EP8X-PCIE8XG302|External PCIe (SFF-8644 1x2) to PCIe x8 Gen 3 Switch Host Card
Highlights
  • Upstream: 8-lane PCI Express Gen 3 (8.0 Gbps)
  • Downstream:  External PCIe Gen 3 (8.0 Gbps) Cable Ports (SFF-8644 1x2 Connector)
  • Supports PCIe Gen 1/PCIe Gen 2/PCIe Gen 3 transfer rates
    • PCIe Gen 1: 2.5 Gbps per Lane
    • PCIe Gen 2: 5.0 Gbps per Lane
    • PCIe Gen 3: 8.0 Gbps per Lane
  • EP8X-PCIE8XG302 supports the following Mode configurations
    • x8, x8 --- One 8-lane External PCIe Port
    • x8, x4 x4 --- Two 4-lane External PCIe Ports
  • Supports Low Profile PCI Form Factor (Low Profile PCI Bracket S-BR-00248-12-1020)
Introduction

EP8X-PCIE8XG302 is External PCIe x8 Gen 3 Switch Host Card. Designed to overcome the limited PCIe connectivity of most desktop computers, the EP8X-PCIE8XG302 can be quickly and easily set up for external expansion. No additional software or drivers are needed.

Utilizing the standard PCI Express Switch, the 16-Lane/5-Port PCI Express Gen 3 (8 Gbps) Switch provides the most efficient fan-out solution.

EP8X-PCIE8XG302 supports the following multiple Port configuration options:

Technical Specifications
Upstream PCIe interface
  • EP8X-PCIE8XG302-H 8-lane PCI Express Gen 3 (8.0 GT/s)
    • x8, x8 Mode Edge Finger (Port1)
    • x8, x4 x4 Mode Edge Finger (Port0)
  • EP8X-PCIE8XG302-T 8-lane PCI Express Gen 3 (8.0 GT/s)
    • x8, x8 Mode SFF-8644 1x2 Connector (Port0)
Downstream PCIe interface
  • EP8X-PCIE8XG302-H 8-lane PCI Express Gen 3 (8.0 GT/s)
    • x8, x8 Mode SFF-8644 1x2 Connector (Port0)
    • x8, x4 x4 Mode SFF-8644 1x2 Connector (Port1&Port2)
  • EP8X-PCIE8XG302-T 8-lane PCI Express Gen 3 (8.0 GT/s)
    • x8, x8 Mode Edge Finger (Port1)
Key Features
  • Standards Compliant
    • PCI Express Base Specification, r3.0 (compatible w/ PCIe r1.0a/1.1 & 2.0)
    • PCI Power Management Spec r1.2
    • Microsoft Windows Logo Compliant
    • Supports Access Control Services
    • Dynamic link-width control
    • Dynamic SerDes Speed Control
  • High Performance
    • performancePAK
      • Multicast
      • Dynamic Buffer/FC Credit Pool
    • Non-blocking switch fabric
    • Full line rate on all ports
    • Cut-Thru packet latency of less than 100ns between symmetric (x4 to x4) ingress and egress Ports
    • 2KB Max Payload Size
  • Quality of Service (QoS)
    • Traffic Class Queuing
    • Eight Traffic Classes per port
    • Weighted round-robin source port arbitration

Lane Status LEDs

  • Slow Blink: Gen 1
  • Fast Blink: Gen 2
  • Solid: Gen 3

 

  • x8, x8 mode
    • Upstream Lane Status LED
      • LEDP1: Upstream Status LED
    • Downstream Lane Status LEDs
      • LEDP0: Downstream Status LED
  • x8, x4 x4 mode
    • Upstream Lane Status LED
      • LEDP0: Upstream Status LED
    • Downstream Lane Status LEDs
      • LEDP1: Downstream Status LED
      • LEDP2: Downstream Status LED

Switch

  • SW1-1&2: Max PCIe Data Rate
SW 1-1 SW 1-2 PCIe Data Rate
ON* OFF* Gen 3 (8.0 GT/s)
OFF OFF Gen 2 (5.0 GT/s)
OFF ON Gen 1 (2.5 GT/s)
  • SW1-3&4: CFC(100MHz) Spread Setting
SW 1-3 SW 1-4 CFC(100MHz) Spread
OFF ON Down -0.5
OFF* OFF* No Spread
ON OFF Down -0.75
  • SW2-1&2: PCIe Mode
SW 2-1 SW 2-2 Mode
OFF ON x8, x8
ON OFF x8, x4 x4
  • SW2-3: Host or Target
SW 2-3 Host Target

x8, x8
upstream

Port1 OFF Port0 ON

x8, x4 x4
upstream

Port0 ON Port0 OFF
  • SW2-4: NT Port
SW 2-4 NT Port
ON Port2
OFF* Disable*
Jumper for EP8X-PCIE8XG302-H
  • JP1: SSC RefCLK Enable 
    • C-1: Port1 (x8, x8 mode)
    • C-0: Port0 (x8, x4 x4 mode)
Computer Platform Requirements Desktop computer equipped with a PCIe x8, x16 slot
Physical Dimensions
  • 84(H)x134(L) mm
  • NW: 78g
Available Models

For Host: EP8X-PCIE8XG302-H

For Target: EP8X-PCIE8XG302-T

SFF-8644 1x2 Fixed-Side Connector Pinout
Optional Accessories
  • Low Profile PCI Bracket (S-BR-00248-12-1020)
  • SFF-8644 Cable (CB-S0020)
  • Expansion Docking Board (PCIEX16D02)
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