Xgig U.3-Server, 4-lane Interposer Module for PCI Express 5.0

The Xgig® U.3-Server Interposer is optimized for development, debugging and tuning of NVMe SSD operation in high-density storage servers with U.3 connections

The VIAVI Solutions Xgig U.3-Server, 4-lane Interposer for PCI Express® 5.0 is an active Interposer optimized for development, debugging and performance tuning of NVMe SSD operation in high-density storage servers. Bidirectional PCIe 5.0 protocol data on 4 lanes is captured at 32GTps for analysis. The Interposer supports either 1 link of 4 lanes, or 2 links of 2 lanes. It is compliant to the SFF-TA-1001 connections standard for PCIe signals.


  • Provides consistent, repeatable capture of link training, equalization negotiation and other data
  • Quicker NVMe SSD debugging and faster time to market
  • Lower engineering costs


  • Supported by VIAVI Analyzer tools for trace capture with filter, trigger and more
  • Supports error injection for deep system analysis
  • Interfaces with Xgig Exerciser for endpoint emulation
  • Works together with the VIAVVI Xgig 5P8 and 5P16 PCIe 5.0 Analyzer/Exerciser/Jammer chassis

Key Features

  • Operates up to 32GTps, PCIe 5.0 data rates
  • Downward compatible with PCIe data rates of 2.5, 5.0, 8.0 and 16GTps
  • Supports 1-link of 4-lanes, or 2-links of 2- lanes
  • Adjustable tray clamps and quick-release latch allow for snug fit and quick SSD swap
  • Data path uses high-speed linear redrivers to ensure good signal capture with little or no tuning
  • Supplied with high-quality, custom cables for Analyzer system attachment
  • Supports Analyzer side-band signal capture and triggering via custom cable
  • Supplied power brick makes interposer power independent of host system

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