• 8-lane PCI Express
  • PCIe Gen 1 (2.5 GT/s)
  • PCIe Gen 2 (5.0 GT/s)
  • PCIe Gen 3 (8.0 GT/s)

• Two SFF-8643 Connectors (PCIe1 ~ PCIe2)
  • 85ohm, 36pin (pitch=0.75)
• Each SFF-8643 Connector 4-lane PCI Express
  • PCIe Gen 1 (2.5 GT/s)
  • PCIe Gen 2 (5.0 GT/s)
  • PCIe Gen 3 (8.0 GT/s)

• 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

• Upstream Lane Status LEDs
  • PORT0 LED: Upstream Status LED
• Downstream Lane Status LEDs
  • PORT1 LED: Downstream Status LED (x8)
  • PORT1 & PORT2 LEDs: Downstream Status LED (x4, x4)
  • PORT1 & PORT2 & PORT3 & PORT4 LEDs: Downstream Status LED (x2, x2, x2, x2)

SW1-1&2: PCIe Port Configuration

Switch	Port Configuration
SW1-1	SW1-2	PCIE1	PCIE2
ON*	OFF*	x4	x4
OFF	OFF	x2, x2	x2, x2
OFF	ON	x8

SW1-3&4: Max PCIe Data Rate

SW1-3	SW1-4	PCIe Data Rate
ON*	OFF*	Gen 3 (8.0 GT/s)
OFF	OFF	Gen 2 (5.0 GT/s)
ON	ON	Gen 1 (2.5 GT/s)