The BentoIO CMX0 is a low-profile IO-carrier board designed for the Raspberry Pi Compute Module 5, combining a compact footprint with onboard cooling and expansion support. It is intended for space-constrained systems that require access to standard Raspberry Pi interfaces while maintaining a reduced overall height.

The CMX0 supports both Compute Module 5 Lite and eMMC variants, with a microSD card socket provided for Lite modules. Compute Module 4 is not supported.

The IO-carrier board follows the standard Raspberry Pi form factor, measuring 85 mm × 56 mm, and includes Raspberry Pi-compatible mounting holes.

BentoIO CMX0 IO + CM5

For connectivity and expansion, the CMX0 provides a PCIe connector, MIPI DSI via dual 22-pin FPC connectors, and HDMI output through an optional daughter board that is not included. A standard 40-pin GPIO header is also exposed, with both straight and right-angled pin headers included in the package.

BentoIO CMX0 IO Bottom View

USB connectivity includes one USB 3.0 port implemented through a USB-C connector, along with two internal USB 2.0 headers using PH2.0 connectors. A low-profile heatsink is included, resulting in an overall height of approximately 10 mm, with power supplied through a USB-C connector providing 5 V input.

BentoIO CMX0 IO Side View

Additional features include a 4-pin fan connector, dedicated buttons for power-on and flash mode, and antenna support for wireless operation when used with compatible Compute Module 5 variants.

BentoIO CMX0 IO Top View

Further Information

According to the product listing, the CMX0 IO-carrier board is priced at $83.19 including VAT. The package contents include the CMX0 IO board, a low-profile heatsink with mounting hardware, two GPIO pin headers, and an antenna.