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Ultra-Compact Managed 26-Port Gigabit Ethernet Switch Module
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End-of-Life product. Not recommended for new designs
Please contact us for replacement options

  • 24-port Layer 2/3 switch, 2 10G SFI ports
  • 4Mb packet memory
  • Standalone network switch, or in combination with a host computer
  • Operating Temperature: -40°C to +85°C (-40°F to +185°F)

The EPSM-10GX is a managed Layer 2+ Ethernet switch module in an ultra-compact 2.2″ x 3.3″ (55×84mm) size offering 24 10/100/1000Mbps copper ports + 2 10Gbps SFI ports. The module is intended to be used on a carrier board. 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 Ethernet switch solutions.

The small size, based on the industry-standard COM Express Mini form factor, makes EPSM-10GX a perfect choice for use as a building block for creating custom Ethernet switch solutions in a variety of space-demanding applications, such as drones, ground and underwater vehicles, and robots. EPSM-10GX can also be mounted on a carrier board to create quick Ethernet switching solutions in other industry standard form factors such as VPX. Customers looking for a complete off-the-shelf solution may be interested in Diamond's EPS-24G2X, which provides all of the switch’s features in the industry standard 3.5 inch form factor.

The standard Layer 2 software embedded in the module provides a comprehensive set of Ethernet switch features suitable for a wide range of industrial applications. All features are manageable via a GUI web interface accessible over any port, as well as with a command language accessed via a built-in RS-232 port. A more advanced software package, offering Layer 3 routing performance as well as IEEE1588 PTP protocol, is available upon request. These features are fully supported in the EPSM-10GX hardware.

Two cooling accessory options are available: A heat sink provides convection cooling in a low profile, while a heat spreader provides improved conduction cooling for superior high temperature performance in applications where physical contact with the system enclosure is available.

Two high-speed connectors provide all power and data communications between the module and the carrier board. The first connector provides power, 9 10/100/1000 ports, the serial interface, and a serial LED data stream. Applications requiring 9 ports or less may use just this connector. The second connector contains 3 more 10/100/1000 ports, QSGMII signals for an additional 12-port PHY to provide 12 additional 10/100/1000 ports, and the 2 10G SFI ports.

EPSM-10GX is designed to meet the challenges of vehicle environments with its −40/+85°C operating temperature range and its MIL-STD-202G shock/vibration resistance.

design guide provides instructions for incorporating the EPSM-10GX into your own circuit. Under NDA a complete carrier board reference schematic and PCB layout are available to provide the starting point for a custom Ethernet switch based on the EPSM-10GX. This design is also available off the shelf as Diamond's EPS-24G2X product.

Technical specifications
Ethernet Switch 24-port Layer 2/3 switch
Built-in 500MHz MIPS 24KEC microcontroller for configuration and management
Number of Ports 24 10/100/1000Mbps Ethernet ports with non-blocking wire-speed performance
2 10G SFI ports for use with SFP+ 10G fiber/copper sockets
On-board Memory 4Mb packet memory
Shared memory buffer with per-port & CoS memory management
MEF Hierarchical MEF compliant policing & scheduling; MEF E-Lane, E-Line, and E-Tree services
Frame Buffer Jumbo frame support at all speeds
Network Management SNMP v1/v2c/v3
Command Line Interface (CLI)
VLAN IEEE 802.1Q VLAN switch with 32K MACs and 4K VLANs
Push/pop up to three VLAN tags
Independent & shared VLAN learning (IVL, SVL)
Multicast IPv4/IPv6 uni & multicast group support
Remarking Dual leaky bucket policers with remarking and statistic
Classifier 8 priorities and 8 CoS queues per port with strict or deficit-weighted round robin scheduling
Shaping/policing per queue and per port
Storm Control Policing with storm control and MC/BC protection
Link Aggregation IEEE 802.3ad
RSTP Rapid Spanning Tree Protocol (IEEE 802.1W) and MSTP
MIBs Support for WebStax
Power Management ActiPHY and PerfectReach power management
VeriPHY cable diagnostics
Serial Port 1 RS-232 port for host interface
Indicator Lights 24 status LEDs, two per port; 2 general purpose
Standalone Capable Standalone network switch, or in combination with a host computer
Power Input 5VDC
Form Factor COM Express Mini form factor, 2.2" H x 3.3"W / 55 x 84mm
Weight 85.2 grams (3.00 oz.)

Environmental and physical specifications

Operating Temperature -40°C to +85°C (-40°F to +185°F)
Shock/vibration Tested to MIL-STD-202G level
RoHS Compliant
Model Description
EPSM-10GX Epsilon Ethernet Switch Module, 2x 10G SFI, 12x GbE, QSGMII
EPSM-10GX-L3 Epsilon Ethernet Switch Module, 2x 10G SFI, 12x GbE, QSGMII, IStaX
EPSM‑10GX‑1588 Epsilon Ethernet Switch Module, 2x 10G SFI, 12x GbE, QSGMII, w/1588
DK‑EPSM10GX‑01 Carrier board design kit (NDA required)
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