MXS524 PCIe 5.0 Switch

PCI Express 5.0 Switch

Dolphin’s MXS524 High Speed PCI Express switch delivers a powerful and flexible PCI Express external solution. This PCI Express 5.0 switch supports standard I/O expansion and high throughput PCI Express clustering. It is fully supported by Dolphins eXpressWare software suite.

  • 24 PCI Express 5.0 x4 ports
  • 32 GT/S per lane
  • 128 GT/s per port
  • NTB or Transparent use
  • SFF-8644 Connectors
  • PCIe 5.0 SFF-8644 cables
  • Hot Plug cabling support
  • 19 Inch 1U rack mountable
  • Redundant Fans
  • Port status LEDs
  • Ethernet based management and monitoring
  • Microchip Gen 5.0 PFX chipset
  • Copper and Fiber cables

MXS524 Product Data

The MXS524 is Dolphin's fifth generation PCIe switch product and enables users the ability to create a scalable PCIe fabric solution using standard PCIe cables. PCIe solutions running over back planes can now easily be enabled to run over external cables. Larger PCIe configurations can be realized by interconnecting multiple MXS524 switches. By loading the appropriate firmware, the MXS524 supports both transparent and non transparent bridging (NTB) use cases for clustering and I/O expansion applications.

The MXS524 is the high-end switching component in Dolphin's new PCI Express 5.0 product family. This 24 port 1U cluster switch delivers 128 GT/s of non-blocking bandwidth per port at ultra low latency. Up to 4 ports can be combined into a single x16 / 512 GT/s port if higher bandwidth is required. Each connection is fully compliant with PCI Express 1.0, 2.0, 3.0, 4.0 and 5.0 I/O specifications. The MXS524 is based on the latest Microchip Switchtec PCIe Gen 5 PFX fanout switch technology.

Applications that does not need PCIe 5.0 x16 speed can alternatively use the 24 port PCIe x16 Gen 4.0 MXS924 switch.

PCIe IO Expansion

The MXS524 switch used in combination with the MXH532 will support standard IO expansion, connecting one server to many PCIe Devices or PCIe Expansion chassis. Additional configurations supporting multiple hosts and switch partitioning, fail-over configurations will be supported in the future. Management and configuration of the PCIe fabric will be done through the Ethernet port. The figure below shows a typical IO Expansion setup using the MXS524.

MXS524 PCI Express switch transparent topology

PCIe Clustering / Networking

For host to host communication, the MXS524 can be combined with Dolphin’s MXH530 Host Adapters. Operating in Non Transparent Bridging mode, Dolphin has solved the strict power on requirements normally associated with PCI Express. Hosts, cables, and the switch can be hot-swapped and power cycled in any order, providing real plug and play as normally expected from networking components. The figure below shows a typical 6 node network.

MXS524 PCI Express switch 6 node configuration

The MXS524 supports Dolphin’s extensive PCI Express Software libraries to create a powerful and reliable communication solution for applications that benefit from an ultra-low latency, high performance cluster interconnect. Dolphin’s PCI Express Software enables standard and embedded Linux, Windows, RTX and VxWorks network applications to benefit from PCI Express performance without modification. This comprehensive solution is ideal for real-time, technical and high performance computing, cloud computing, and enterprise business applications.

Composable Hardware Infrastructures

The MXS524 can be used to develop composable hardware infrastructures. In this environment, it functions as a top of rack switch which connects both I/O and processing.

Reflective Memory

The MXS524 supports large reflective memory configurations and multiple multicast groups. Customers using older reflective memory solutions from Dolphin will have en easy migration to the new platform.

Cables and ports

The MXS524 switch has six quad SFF-8644 cable connectors and supports standard PCIe 5.0 cables. Each quad port can be used as four independent x4 links, two independent x8 links or one x16 link (in total up to 24 x4 links).Copper cables up to 2 meters and AOC cabeles up to 100 meters are supported. More information on cables for the MXS524.


The MXS524 comes with a built in management processor. The processor enables Ethernet based firmware upgrade, switch re-configuration and monitoring. All configuration data is stored in non volatile memory so the processor is not required to bring up a configured product.


Feature Description
Link Speed 128 GT/s per x4 port.
Application Performance 100ns port latency
Active Components Microchip PFX Switchtec ® PCI Express 5.0 Switch
PCI Express Base Specification 5.0
Ports 24 - x4 non-blocking PCIe Gen5 128 GT/s ports
Cable Connections x4 PCIe 5.0 SFF-8644 cable Connections
Copper cables up to 2 meters
PCIe Fiber Optic cables up to 100 meters
Power Consumption Auto-sensing power supply
100-240V AC 50-60Hz
Max power consumption (including power to the optional fiber transceiver cables): 80 Watts
Management Ethernet and USB management ports
Operational status and alert LEDs
Ethernet RJ45 - 1Gb / 100Mb Speed
Mechanical Dimensions 1U, 19 inch rack mountable chassis
440mm(W) x 300mm(D) x 45mm(H)
Four Redundant Fans
Operating Environment Operating Temperature: 0°C - 40°C
Relative Humidity: 5% - 95% (non- condensing)
Storage Environment Storage Temperature: -25°C - 70°C
Relative Humidity: 10% - 95% (non- condensing)

SuperSockets™ Berkley Sockets API
Microsoft WinSock2/LSP support
TCP/IP Driver

Pending Regulatory CE Mark
FCC Class A
Pending Safety test EN 62368-1:2014 + A11:2017
EMC test EN 55032:2012
EN 55024:2010
EN 61000-3-2:2014
EN 61000-3-3:2013
Operating System Windows


MXS524 - PCI Express Gen 5.0 Switch

Please contact Dolphin for availability

  • Download Product Brief (coming soon)
  • Download Switch Users Guide (coming)
  • Download Switch Firmware Release Note (coming)