Diamond Systems EPSM-10GX

Managed 26-Port Gigabit Ethernet Switch Module for baseboard applications


The EPSM-10GX is a managed Layer 2+ Ethernet switch module in an ultra-compact 2.2" x 3.3" (55 x 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 our 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.

Main Specification

Function24-port Layer 2/3 switch
Built-in 500MHz MIPS 24KEC microcontroller for configuration and management
Hierarchical MEF compliant policing & scheduling; MEF E-Lane, E-Line, and E-Tree services
Jumbo frame support at all speeds
• IEEE 802.1Q VLAN switch with 32K MACs and 4K VLANs
• Push/pop up to three VLAN tags
• Independent & shared VLAN learning (IVL, SVL)
IPv4/IPv6 unicast & multicast group support
Rapid spanning tree protocol (IEEE 802.1W) and MTSP
ActiPHY and PerfectReach power management; VeriPHY cable diagnostics
Interface(s)24 10/100/1000Mbps Ethernet ports with non-blocking wire-speed performance
2 10G SFI ports for use with SFP+ 10G fiber/copper sockets
Connection(s)Two high speed board-to-board mating connectors provide all power and I/O connections
This is a module designed for fitting to a carrier board



Electrical+5 powered
Mechanical84 x 55mm, COM Express Mini footprint/mounting holes
Conformal CoatingOn request
SoftwareThe switch is ready to plug into your application without any driver installation or firmware upgrades
A web interface and a CLI provide an intuitive GUI for configuring and managing the switch
TemperatureTemperature range (operation): -40 to +85°C
Temperature range (storage): -40 to +85°C
Humidity5% - 95% relative humidity
Weight85.2 grams (3.00 oz.)
Warranty1 Year


Ordering Details

EPSM-10GX26 port switch module, -40 to +85C operating temperature
Carrier board design kit (NDA required)

Epsilon 26port Ethernet switch with 24 10/100/1000 ports + 2 10G SFI ports

Cable kit including 6 4-port 10/100/1000 Cat 6 RJ-45 cables, power cable, and serial interface c
Recab UK
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