Epsilon-24000 is a managed Layer 2+ Ethernet switch module offering up to 24 10/100/1000Mbps copper twisted pair ports and 2 small form factor pluggable (SFP) sockets in the compact PC/104 form factor. Epsilon-24000 is designed for rugged applications including industrial, on-vehicle and military.

Epsilon-24000 is a standalone switch that does not require any host computer interface. All switch functions are managed by a microprocessor embedded directly into the switch. The processor is accessed via an in-band web interface over one of the Ethernet ports or via an out-of-band command-line interface over an RS-232 serial port. The integrated web interface provides an intuitive GUI for use in configuring and managing all switch functionality. On-board memory holds dual application images, boot code, MAC addresses, and other parameters, and can also be used for program execution.

Epsilon-24000 includes a dual SFP socket for interfacing to 1G fiber Ethernet networks. One port can operate at enhanced 2.5G speed to support efficient stacking of two switches together for a combined total of 50 ports.

Epsilon-24000's advanced Ethernet switch board includes two innovative features that enable automatic power savings. The switch can detect unused Ethernet ports on network devices and power them down or place them in stand-by mode. Additionally, the switch actively adjusts the power level needed based on cable length, saving energy on links shorter than the 100m maximum specified length.

Input power is provided through the built-in, wide-range +5 to +34VDC power supply, enabling operation using industrial power sources.

Epsilon-24000 was designed for use in vehicle and harsh environment applications. All I/O connectors are latching, providing enhanced reliability over the RJ-45 connectors used in commercial Ethernet switches. A 50% thicker PCB provides better protection against vibration in vehicle environments. The wide range 5-34V input power supply is compatible with all common vehicle and industrial power sources. The -40ºC to +85ºC operating range makes Epsilon-24000 suitable for use in outdoor and vehicle applications.

Epsilon-24000 comes loaded with all required firmware, enabling its immediate operation without any development effort. The included web interface provides an intuitive GUI for use in configuring and managing switch functionality.


Two Epsilon-24000 cable kits are available, one for each Epsilon-24000 model. Each kit includes the necessary cables for Epsilon-24000's inputs and outputs. The cable kit pictured below is the CK-EPS-24016 Cable Kit.

Epsilon-24000 cable kit

  • 1 1x 6981050 Serial cable
  • 2 4x or 6x 6981508 Ethernet cable 
  • 3 1x 6981507 Power cable 


FunctionSwitch Type
• 26-port, Layer 2+ switch
• Built-in microcontroller for configuration and management

On-board Memory
• 4Mb packet memory
• Shared memory buffer with per-port & CoS memory management

• Hierarchical MEF compliant policing & scheduling
• MEF E-Lane, E-Line, and E-Tree services

Frame Buffer
• Jumbo frame support at all speeds

• IEEE 802.1Q VLAN switch with 8K MACs and 4K VLANs
• Push/pop up to two VLAN tags
• Independent & shared VLAN learning (IVL, SVL)

• IPv4 and IPv6 multicast group support

• Dual leaky bucket policers with remarking and statistics

• 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

• Advanced security and prioritization available though multistage TCAM engine

• Rapid Spanning Tree Protocol (IEEE 802.1W) and MSTP

• Support for both WebStax and CEServices MIBs

Power Management
• ActiPHY and PerfectReach power management
• VeriPHY cable diagnostics

Standalone Capable
• Standalone network switch, or in combination with a host computer
Interface(s)16 or 24 10/100/1000Mbps Ethernet ports with non-blocking wire-speed performance
1 1G SFP socket; 1 2.5G SFP socket
Controller(s)Vitesse VSC7429/VSC8512 Ethernet Switch controllers
Connection(s)1 RS-232 port for host interface
50 status LEDs, 2 per copper port, 1 per SFP port
2 general purpose
6 latching headers, four Ethernet ports per connector


ExpansionThis is a PC/104 footprint board - it has no PC/104 expansion
Electrical+5 to +34V DC/DC power supply
16 ports active: 10.4W maximum at +12VDC
26 ports active: 15.7W maximum at +12VDC
MechanicalPC/104 3.55" x 3.775" (90mm x 96mm)
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°C to +85°C (-40°F to +185°F)
Temperature range (storage): -40°C to +85°C (-40°F to +185°F)
Humidity(operation) 10% - 90% relative humidity (non-condensing)
(storage) 5% - 95% relative humidity (non-condensing)
Weight4.9oz (138.9g) with heatsink
MTBF461,094 hours at 20°C main board
1,661,388 hours at 20°C daughter board
Warranty1 Year



26-Port Gigabit Ethernet Switch including 2 SFP ports, PC/104 form factor, -40°C to +85°C operating temperature

16-Port Gigabit Ethernet Switch, PC/104 form factor, -40°C to +85°C operating temperature
EPS-24026-104 Development Kit: EPS-24026-104 switch, CK-EPS-24026, ACC-EPS24K-LED-S

EPS-24016-104 Development Kit: EPS-24016-104 switch, CK-EPS-24016, ACC-EPS24K-LED-S

Cable Kit for EPS-24026-104 with 6 quad port Ethernet cables, 1 serial cable, 1 power cable

Cable Kit for EPS-24016-104 with 4 quad port Ethernet cables, 1 serial cable, 1 power cable

Epsilon-24000 LED Accessory Board with sockets

Epsilon-24000 LED Accessory Board with pin headers and cables
Recab UK
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