SparkFun MicroMod Ethernet Function Board - W5500

Item number 59313 Brand Sparkfun Model COM-18708 Share Write a review
SparkFun MicroMod Ethernet Function Board - W5500

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The SparkFun MicroMod Ethernet Function Board - W5500 is a specialized addition to your MicroMod project, offering seamless integration into an Ethernet network. This board employs the W5500 Ethernet control module from WIZnet and a DC/DC converter, allowing any MicroMod assembly to become a connected and powered device in a Power-over-Ethernet (PoE) system.

The W5500 Ethernet Controller from WIZnet is a highly versatile TCP/IP embedded Ethernet controller. It uses SPI communication protocol, supporting up to eight independent sockets simultaneously. With a SPI interface operating at up to 80MHz, it ensures high-speed Ethernet communication. The chip also includes a Wake on Lan (WOL) operation and a power down mode, contributing to efficient power usage.

The SparkFun MicroMod Ethernet Function Board uses an Ag9900m Power-over-Ethernet (PoE) DC/DC converter module. This module powers MicroMod assemblies from a PoE source such as a router or network switch. It supplies 9 Watts @5V to connected devices, configuring the PoE supply voltage to the IEEE802.3af Alternate B power scheme. This scheme uses the spare pairs in the Ethernet cable (4,5 and 7,8) for positive and negative DC voltage, effectively isolating power delivery from the data lines.

Thanks to the MicroMod standardization, the process of integrating the function board into your project is simplified. There is no need for cross-referencing schematics with datasheets or dealing with jumper wires. Simply align the function board's M.2 edge connector with the slot of the M.2 connector on the main board and secure it with screws.

Note: This product does not include a MicroMod Processor, Main Board, or Ethernet accessories. These components must be purchased separately.

The SparkFun MicroMod Ethernet Function Board - W5500 is a part of the MicroMod modular interface ecosystem. This ecosystem connects a microcontroller “processor board” to various “carrier board” peripherals. The MicroMod standard, utilizing the M.2 standard, is designed for easy processor swapping on the fly. Choose a specialized carrier board for your project and pair it with your choice of compatible processor!


  • WIZnet W5500 Ethernet Controller
    • TCP/IP embedded controller
    • Supports TCP, UDP, IPv4, ICMP, ARP, IGMP and PPPoE protocols
    • 32KB internal memory
    • High Speed SPI support (80MHz clock speeds)
    • Power conservation with Wake on LAN (over UDP) and Power Down modes
  • Ag9900M Power-over-Ethernet (PoE) DC/DC converter
    • Input Voltage Range: 36V to 57V
    • Output Voltage: 5V
    • 9 Watts Power
    • IEEE802.3af compliant
    • Configured for Alternate B (power on spare pair) power scheme
  • RJ45 Connector with 10/100 Base-T Integrated Magnetics for PoE Applications
    • Status LEDs for Ethernet Link and Activity


Hardware Documentation:

  • Schematic
  • Eagle Files
  • Board Dimensions
  • Hookup Guide
  • W5500 Datasheet
  • Ag9900M Datasheet
  • RJ45 Connector Datasheet
  • GitHub Hardware Repo

MicroMod Documentation:

  • Getting Started with MicroMod
  • Designing with MicroMod
  • MicroMod Info Page
  • MicroMod Forums


Brand information
Brand Sparkfun
More infoMicroMod Ethernet Function Board - W5500 Hookup Guide - SparkFun Learn
Size info
Length40 mm
Width70 mm
Height20 mm
Weight40 g
€ 38,50€ 31,85 Excl. VAT (NL)
Out of stock In stock with supplier
Delivered in 5 to 10 days
Shipped from € 3,50 (NL) 30 days cooling-off Excellent service

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