PiTray mini for Raspberry Pi Compute Module 4

PiTray Mini Carrier Board For Raspberry Pi Compute Module 4 With Gigabit Ethernet And Cluster Computing Support

The PiTray Mini is a compact carrier board designed specifically for the Raspberry Pi Compute Module 4 (CM4), providing an efficient and cost-effective platform for cluster computing, embedded systems, and industrial applications. Featuring the same dimensions and mounting hole layout as the Raspberry Pi Model B, the board can be easily integrated into existing Raspberry Pi cluster setups while offering the enhanced reliability and performance advantages of Compute Module 4. With support for CM4 variants featuring onboard eMMC storage, the board delivers faster disk I/O performance and improved system reliability for both standalone and clustered deployments.

Designed with practicality and affordability in mind, the PiTray Mini includes Gigabit Ethernet, USB 2.0 connectivity, full-size HDMI output, and a standard Raspberry Pi HAT-compatible GPIO header. An onboard eMMC boot switch simplifies operating system flashing for CM4 modules with eMMC storage, while a microSD card slot supports CM4 Lite variants. By focusing on essential interfaces and eliminating rarely used components such as dual micro HDMI, USB 3.0 hubs, DSI, CSI, and audio connectors, the board provides an economical solution for cluster builders, IoT gateways, HTPC systems, RetroPie projects, and embedded computing applications.

Key Features

• Designed for Raspberry Pi Compute Module 4: Dedicated CM4 carrier board.
• Model B Compatible Form Factor: Same outline and mounting holes as Raspberry Pi Model B.
• Ideal for Cluster Computing: Optimized for CM4 cluster deployments.
• Gigabit Ethernet Connectivity: Reliable high-speed network communication.
• eMMC Boot Switch: Simplifies operating system flashing for eMMC-equipped CM4 modules.
• MicroSD Card Support: Compatible with CM4 Lite variants.
• USB 2.0 Interface: Supports external peripherals and storage devices.
• Full-Size HDMI Output: Direct display connectivity.
• GPIO HAT Connector: Compatible with Raspberry Pi HAT expansion boards.
• Compact Design: Suitable for embedded and space-constrained applications.
• Enhanced Reliability: Benefits from CM4 eMMC storage options.
• Energy Efficient Platform: Supports CM4 variants without WiFi and Bluetooth modules.

Applications

• Raspberry Pi CM4 clusters
• Edge computing systems
• Industrial automation
• IoT gateways
• Network appliances
• Embedded Linux systems
• Home servers
• Mini NAS projects
• RetroPie gaming systems
• HTPC media centers
• Educational computing clusters
• Custom embedded applications

Board Overview

• CM4 socketx1
• Set of standard Raspberry Pi HAT connectors x1
• Standard HDMI 2.0 connector   x1
• Gigabit Ethernet RJ45 socket   x1
• Native USB 2.0 connector   x1
• SD card socket for CM4 variants without eMMC   x1
• USB Type-C connector for powering and also programming eMMC variants of CM4   x1
• Boot Mode Switch for programming mode and normal mode   x1
• RUN button for easy reset   x1
• Red Power LED   x1
• Green Activity LED   x1
• Mounting holes for CM4   x2
• CM4 corner marks for CM4 position guidance   x4
• Input power: +5V
• Dimensions: 85 mm x 56 mm

Package List: