The EPSM-10GX4 is a managed Ethernet switch module in an ultra-compact 2.2" x 3.3" (55 x 84mm) size offering 24 10/100/1000Mbps copper ports + 4 10Gbps SFI ports. The module is intended to be used on a carrier board, such as Diamond's EPS-24G4X, to implement a complete Ethernet switching solution. The core Ethernet switching technology is almost fully encapsulated on the module; for many applications, only the "last inch" of magnetics and I/O connectors is required to complete the circuit, enabling easy development of custom form factor compact, rugged Ethernet switch solutions.



  • COM-like virtually-complete Ethernet switch with embedded software on a compact module
  • Enables rapid development of custom Ethernet switch boards and systems
  • Only magnetics, connectors, and input voltage regulator needed to create complete solution
  • 24 total gigabit Ethernet ports – 12 from on-board PHY, 12 from carrier board PHY
  • 4 10G SFI ports for SFP+ or rugged optical transceivers
  • High speed connectors carry all signals to carrier board
  • Only 55 x 84mm / 2.2 x 3.3", same size as a business card
  • Thicker PCB and -40 to +85°C operating temperature support rugged mobile applications
  • Heat sink and heat spreader thermal solutions and design files available
  • Layer 2+ switching and Layer 3 routing software available
  • IEEE 1588 PTP support available
  • Design kit available with carrier board schematics and bill of materials
  • Custom carrier board and complete switch solution design and manufacturing services available




A Product By Diamond Systems



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