Gigabit/2.5G Dual Ethernet Multi-Function Expansion Board Based On Raspberry Pi CM5 (NOT included), Supports RS485 Industrial Communication, 4G / 5G Module And 4K Display Output
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Gigabit/2.5G Dual Ethernet Multi-Function Expansion Board based on Raspberry Pi CM5 (NOT included), Supports RS485 industrial communication, 4G / 5G module and 4K Display Output, Suitable for all variants of Compute Module 5Dual Ethernet 4G Multi-Function Expansion Board based on Raspberry Pi CM5
Designed for Raspberry Pi Compute Module 5
* the Raspberry Pi CM5 is NOT included.Version Options
CM5-ETH-RS485-4G-BASEthe base board only

CM5-ETH-RS485-4G-BOXthe base board + metal case + power supply
* please refer to the package content for the detailed part list.
SpecificationsCM5 socket Suitable for all variants of Compute Module 5 Networking 1000M Ethernet RJ45 port × 12500M Ethernet RJ45 port × 1 USB USB 2.0 port (Type-C) × 1 USB 2.0 port (Type-A) × 1 USB 3.2 Gen1 port (Type-A) × 1 Video HDMI port × 1, supports 4K display output M.2 M.2 M KEY (PCIe Gen2/3 × 1, supports 2230 / 2242 / 2280 NVMe or AI module) M.2 B KEY, supports connecting 4G / 5G communication module Storage TF card socket for Compute Module 5 Lite (without eMMC) variants Serial Interface RS485 × 4 Digital Input 1 × digital input (input voltage: 5V ~ 36V) Relay Contact rating: ≤ 10A 250V AC or ≤ 10A 30V DC Fan header 5V, 4PIN JST-SH PWM fan header Buzzer 1-ch controllable buzzer Other Onboard encryption chip Power Input 7V ~ 36V wide voltage range (screw terminal + jack), 5V 5A Type-C port Dimensions 132.50 × 112.20 × 34.50 (mm) What's the differencesCM5 Base Board Interface count and specifications PoE GigabitETH 40PINGPIO PCIe USB① MIPI HDMI RTC FanHeader② PowerInput Features
NANO A√ 3.0×1 ×2 SH1.0 √ 5V CM5 sized
NANO B×1 √ 16PIN PCIe 3.0×1 ×2 √ SH1.0 √ 5V CM5 sized
mini Base A×1 √ 16PIN PCIe 3.0×22.0×2 ×2 ×2 ML/CR1220 √ 5V mini size
mini Base B×1 √ M.2 M KEY 3.0×22.0×2 ×2 ×2 ML/CR1220 √ 5V mini size, onboard EEPROM and encryption chip
Mini Dual Gigabit×2 √ 3.0×1 SH1.0 √ 5V dual ETH
Dual ETH A1G ×1 2.5G ×1 √ M.2 M KEY 3.0×12.0×2 ×2 ×2 ML/CR1220 √ 7V~36V dual ETH, onboard EEPROM and Encryption chip
Dual ETH B1G ×1 2.5G ×1 √ M.2 M KEY 3.0×12.0×1 ×2 ×1 SH1.0 √ 5V dual ETH ports
Dual ETH 4G/5G1G ×1 2.5G ×1 √ M.2 M KEY 3.0×2 ×2 ×2 ML/CR1220 √ 7V~36V dual ETH and 4G/5G support
PoE Base√ ×1 √ M.2 M KEY 3.0×22.0×2 ×2 ×2 ML/CR1220 √ 5V USB×4
Raspberry Pi official③ ×1 √ M.2 M KEY 3.0×2 ×2 ×2 ML/CR1220 √ 5V Official IO base board
IPCBOX-CM51G ×1 2.5G ×1 M.2 M KEY 3.0×12.0×3 ×1 SH1.0 √ 7V~36V dual ETH, 4G/5G support,RS485/RS232,Encryption chip,EEPROM,CAN,digital inputs,digital outputs,audio,an buzzer
CM5 Dual ETH Multi-function1G ×1 2.5G ×1 M.2 M KEY 3.0×12.0×2 ×2 ×1 SH1.0 √ 7V~36V dual ETH, 4G/5G support,RS485,Encryption chip,digital input,relay,and buzzer
CM5 Wireless Extension1G ×1 M.2 M KEY, M.2 B KEY/Mini-PCIe 3.0×12.0×2 ×2 ×1 ML/CR1220 √ 5V or 7V~36V 5G/4G,Lora,RS485,CAN,and rail-mount support Note ① USB 3.0 is equivalent to USB 3.2 Gen1.② Unless otherwise specified, the Fan header usually is JST-SH type connector.③ There's PoE header only on the Raspberry Pi official IO board without PoE circuit, which means additional PoE module is required for the official IO board to enable PoE feature. Unless otherwise specified, the PoE feature here stands for integrating 802.3af-compliant PoE circuit (5V/2.5A). Connecting with Compute Module 5standard CM5 socket suitable for Compute Module 5 Lite / eMMC series module

* for reference only, please refer to the package content for detailed part list
4G / 5G module compatibilitycompatible with communication modules with M.2 B KEY interface

* An additional communication module is required to enable 5G/4G/3G/2G cellular network function, recommended: SIM7600G-H-M.2,SIM8260G-M2, and SIM8262E-M2.
Supports connecting to M.2 NVMe DriveFaster reading/writing speed compared to the TF card slot of Raspberry Pi, greatly improving reading/writing efficiency of the system or files, Supports booting Pi5 from NVME Solid State Drive

* for reference only, please refer to the package content for detailed part list
Applicable M.2 drive sizes
NVMe Drive Slot Support
* Only supports the NVMe Protocol Solid State Drives.
More rich interfacesFeatures multiple interfaces including ETH / MIPI / HDMI / TF Card Slot / USB / M.2 B KEY / M KEY, easy to use
Precise cut-out with clear labeleach cut-out is completely aligned with the connector
Heat Dissipation DesignAluminum alloy case enables large-area heat conduction and dissipation, combined with heat sink fins, better heat dissipation
supports Rail mountingReserved Rail-mount buckle mounting holes for more convenient installation

* for reference only, the rail bracket is NOT included, please purchase separately.
What's On Board
- CM5 socketsuitable for all variants of Compute Module 5
- Nano SIM card slot
- TF card slotfor connecting a TF card with pre-burnt system (Lite variant ONLY)
- 4PIN JST-SH PWM FAN headerfor connecting 5V cooling fan
- Programmingused for eMMC burning or USB OTG
- HDMI portsupports 4K output
- Button & indicator expansion header
- USB ports1 × standard USB 2.0 port, 1 × USB 3.2 Gen1 Type-A port with up to 5Gbps rate
- 1000M Ethernet RJ45 portsupports 10M / 100M / 1000M network connections
- 2500M Ethernet RJ45 portsupports 10M / 100M / 1000M / 2500M network connections
- IndicatorsStatus indicators for each interface, adapting 2 × additional user-defined indicator
- M.2 M KEYsupports 2242 / 2230 / 2280 NVMe NVMe Solid State Drives or AI modules
- M.2 B KEYsupports connecting 4G/5G communication module
- Buzzer
- DC power supply jacksupports DC 7V ~ 36V power supply (please do not connect power via the screw terminal at the same time)
- DC power screw terminalsupports DC 7V ~ 36V power supply (please do not connect power via the DC power supply jack at the same time)
- RS485 screw terminals
- Digital input screw terminalInput voltage: 5V ~ 36V
- Relay screw terminalContact rating: ≤ 10A 250V AC or ≤ 10A 30V DC
- RTC Batt headerfor connecting with compatible RTC Batt to power the RTC chip
- Encryption chip
- Dual MIPI interfacesfor connecting to DSI display or CSI camera
Application ExampleSuitable for Raspberry Pi applications in remote communication or other industrial situations

* for reference only, the display is NOT included, please purchase separately.
How to install
Outline dimensions
About Compute Module 5
Newly upgraded, more powerful- Upgraded processor BCM2712, quad-core Cortex-A76 64-bit SoC, more powerful performance
- More options for RAM (2GB / 4GB / 8GB / 16GB)
- More options for eMMC Flash (0GB (Lite) / 8GB / 16GB / 32GB / 64GB)
- Faster eMMC Flash storage, up to 200 Mbps data rate
- Optional for certified radio module, supports either PCB trace antenna or external antenna, more suitable for industrial applications
- Adopts B to B connectors, most compatible with Compute Module 4
- Onboard Gigabit Ethernet PHY supporting IEEE1588, suitable for network applications
- Onboard PCIe Gen 2 x1 interface, allows connecting more useful modules
Resources & Services
* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.
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Brand WavesharePartNumber CM5-ETH-RS485-4G-BASERaktárkészlet NINCSCikkszám RPI-WS34251
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CM5-ETH-RS485-4G-BASE
- CM5-ETH-RS485-4G-BASE x1
- Screws pack x1

CM5-ETH-RS485-4G-BOX
- Metal case (top cover + back cover) and dual side panels x1
- CM5-ETH-RS485-4G-BASE x1
- Rail-mount buckle (20mm × 76mm) x1
- Label x1
- Pink thermal tape x5
- PC insulating sheet x1
- Screwdriver x1
- Screws pack x1
- OPTIONS 12V 4A power x1












