Here’s the page we think you wanted. See search results instead:


Contact an Expert

U4330A SFF-8639 PCI Express Interposer

Sold By:

Starting From US$ 11,530


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

Accurate data recovery with faithful representation of the signal

  • Supports 2.5 GT/s (Gen1), 5.0 GT/s (Gen2) and 8.0 GT/s (Gen3) speeds
  • Uses the ESP (Equalizing Snoop Probe) technology to ensure accurate data recovery in all Gen3 platforms and all link widths x1 through x16
  • Ensures problems in your design can be reproduced; the slot interposer probe has a faithful representation of the signal
  • Supports SFF-8639 single link (x4) or dual link (x2) operation


PCIe® - PCI Express and PCIe are registered trademarks of PCI-SIG.

The Keysight SFF-8639 interposer probe for PCIe utilizes the ESP technology to ensure that the data captured is 100% accurate. The U4330A enables probing of storage solutions based on the SFF-8639 interconnection standard.

The U4330A SFF-8639 interposer is perfectly designed to connect between a Solid State Drive (SSD) and the host that uses the SFF-8639 connection. It enables monitoring of x1, x2 or x4 PCIe communication links. Monitoring of both channels in the dual-link operation requires 2 U4301B modules.

For use with the Keysight U4301A or U4301B PCIe Gen3 analyzer.

The Keysight slot interposer probe 3.0 for PCIe utilizes the ESP technology to ensure that the data captured is 100% accurate.

Industry-unique ESP technology for accurate data capture

Keysight’s PCIe 3.0 analyzer uses Keysight’s unique ESP (Equalization Snoop Probe) technology, with the ability to tune the equalization algorithm used according to the type of channel the analyzer is monitoring. This ensures that the data captured in the analyzer is exactly what is on the wire. Without this capability, at 8 GT/s, there is a high likelihood of misrepresentation of the data on the bus, which can lead to wasted hours (if not days) in the validation cycle.