With Integrated 0.91 inch OLED Display & PoE HAT Support
Enhances Raspberry Pi CM4
Dual full-speed Gigabit ports
Versatile software compatibility
Supports cooling via PWM fan
The Raspberry Pi Compute Module 4 CM4 Router Carrier Board is an expansion board designed to enhance the capabilities of the Raspberry Pi Compute Module 4. It features two full-speed gigabit network ports that provide improved performance, reduced CPU usage, and heightened stability for extended periods of operation. The board maintains the classic GPIO pin header, allowing for the connection of various HAT boards, sensors, and cooling fans. Additionally, it includes a USB 2.0 interface for peripherals such as flash drives, keyboards, printers, and Wi-Fi modules.
An integrated OLED screen measuring 0.91 inches enables customization of the information display, adding a user-friendly touch to the boards functionality. The board supports the OpenWRT open-source router system, allowing it to function as a router after a straightforward setup process. It is also compatible with Raspberry OS, Ubuntu Server, and other Raspberry Pi systems, offering versatility for various applications, including retro gaming.
Equipped with a standard HDMI interface, the board allows for easy configuration and display of operational information. The robust performance of the BCM2711 quad-core 1.5GHz Cortex-A72 processor, combined with the extensive software support from the Raspberry Pi community, makes this board an excellent foundation for creating high-performance gateways, smart routers, and home IoT platforms. It can also be connected to peripherals to serve as a mini-NAS, wireless network bridge, or mini server, controllable via terminal.
For those requiring multiple LAN network ports, the use of a gigabit switch is recommended to expand the network ports without compromising internet performance. The boards 5V DC fan interface supports a cooling fan and is capable of PWM protocol, allowing for fan speed control through PWM signals. This board is versatile enough to be used as a router or for other applications, but please note that the Raspberry Pi board is not included.
Please be aware that the Raspberry Pi Compute Module 4 series is required for use with this board and is not provided.
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov.
Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A $100 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
While the same return policy applies, these orders require a separate contact process for returns.
RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".