MXP924 PXIe System Switch PCIe Cable Adapter

PXIe System Switch PCIe Cable Adapter

Dolphin’s 3U MXP924 PXIe / CompactPCI Express Switch card is a powerful building block for PXIe systems. The PCIe 4.0 board enables PXIe systems to connect to servers, other PXIe, CompactPCI Serial or and IO expansion systems.

  • 24 Lane PCIe backplane ports
  • Up to 16 GT/S per lane
  • Compliant to PXISA
  • Transparent PXIe expansion
  • PCIe 4.0 SFF-8644 cables
  • 3U rack mountable
  • Port status LEDs
  • Copper and Fiber-optic cables
  • Microchip Gen 4.0 PFX chipset

MXP924 Product Data

The MXP924 PXIe Switch PCIe cable adapter card is designed to create a flexible and scalable PXIe fabric solution. Combined with the PCIe Host card MXH932, the MXP924 enables servers and embedded systems to connect to PXIe systems utilizing full PCIe Gen4 wire speed. Multi-chassis configurations can be set up by daisy chaining several MXP924 boards or connecting two MXP924 directly to a MXH932.

PXIe PXISA Multi Chassis

PCI Express Gen 4.0

The MXP924 is designed for PCIe Gen 4.0 link speeds in the backplane and via the front panel PCIe cable port. It will auto negotiate to the highest speed supported (PCIe Gen4 - Gen1) by each component connected to individual port. This allows you to mix various generation of equipment without scarifying performance between high speed components.

PCIe Cable ports

The MXP924 switch has a quad SFF-8644 PCIe cable connectors to allow connectivity to external servers and IO devices. The cable port can be used as two independent x8 links or one x16 link. Each SFF-8644 connector has a protected 3.3V supply to support up to four PCIe Gen4 AOCs. The MXP924 is carefully designed for maximum copper cable lengths. Fiber optics extends this distance to 100 meters. More info on cable alternatives for the MXP924 switch.

Backplane support

The MXP924 follows the PXISA PXIE-1 rev 2.3 and PXISA PCIE-5 Hardware specification 1.1. The default backplane configuration is PCIe x16 +PCIe x8. Please contact Dolphin for other options.

Software support

The eXpressWare software distribution adds a PXI System Library integration (PXI Software Specification Revision 2.5) which allows software like Keysight IO Suite to discover and enumerate a number of PXI chassis and the 3rd party expansion boards in the chassis if MXH924 is installed in the chassis system slot.

Support for the MXH924 was introduced with eXpressWare 5.19.2. The software for the MXP924 must be installed on a host also having the MXH932 card installed. Please select and install the Board Management Package option with the installer to install the PXI System Library.

The software and documentation can be downloaded from

Feature Description
Link Speed 16 GT/s per PCIe Lane.
Application Performance 100ns port latency
PCIe Switch Microchip PFX Switchtec ® PCI Express Gen4
PCI Express Base Specification 4.0
PXISA compliance PXIE-1 rev 2.3 and PXISA PCIE-5 Hardware specification 1.1
PXIe Backplane x16 + 8 PCIe ports
PCIe Cable Connections Quad SFF-8644 x4 cable Ports
Copper cables and Fiber-Optic cable support 0.5 to to 100 meters
Mechanical Dimensions


Storage Environment Storage Temperature: -25°C - 70°C
Relative Humidity: 10% - 95% (non- condensing)

Dolphin Transparent Board Management software (version 5.19.2 and newer)

Regulatory CE Mark
FCC Class A
EMC test

EN 61326-1:2013
EN 61000-6-1 :2007
KS C IEC 61326-1:2008
KS C IEC 61000-6-1:2002
47 CFR Part 15. Subpart B (Clause 15.107 and 15.109) in conjunction with ANSI C63.4:2014

Operating System



MXP908 - PXIe Peripheral NTB Host adapter card with eXpressWare license

MXP909 - PXIe Peripheral Transparent Host adapter

MXP924 - PXIe Gen 4.0 Switch module

Please contact Dolphin for availability.

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