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Gen5 8-Slot High-Speed Switch Expansion Board

Gen5 8-Slot High-Speed Switch Expansion Board

Model：SI-1255E PCIe
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Model No.

  SI-1255E PCIe

Item

Gen5 8-Slot High-Speed Switch Expansion Board

Certifications

CE, FCC, RoHS(compliance)
Material FR-4 PCB / ENIG finish / LCP connector / SMT assembly

Dimensions

220.5mm  x 175mm 
Interfaces

2x QSFP-DD (QDD1/QDD2)

8 x PCIe x16 edge connector (Gen4/Gen5)

OS Support

Windows,Windows Server,Linux

Environment

Operating Temperature : 0°C to 50°C

Storage Temperature : -40°C to 85°C

Operating Humidity : 10% to 90% relative humidity non-condensing

Storage Humidity : 5% to 95% relative humidity non-condensing
Features
  • Massive Bandwidth Architecture: Powered by Broadcom PEX 89144 switch, delivering up to 1024 GT/s Upstream bandwidth via dual high-speed QSFP-DD interfaces (2xGen5x16), and an ultra-high 4096 GT/s Downstream throughput across 8x PCIe Gen5 slots.
  • High-Density GPU Deployment: Features 8x PCIe Gen5 target slots (S1–S8) customized for high-performance downstream GPU clusters and hardware accelerators.
  • Advanced Thermal Module: Equipped with an onboard premium copper stacked-fin heatsink and a high-airflow blower cooling fan to maintain optimal switch temperatures.
  • Visual Diagnostics: Onboard status LEDs including a green PCIe Switch Heartbeat LED and a green Switch Board Healthy LED for instant system status verification.

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