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CM4-IO-BASE-Acce B - mini base board for Raspberry Pi CM4 modules + USB HDMI adapter

CM4-IO-BASE-B base board dedicated to Raspberry Pi CM4 modules in a set with a USB HDMI adapter to FCC. Waveshare CM4-IO-BASE-Acce B

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ID: 586734

35,82€ gross (23% VAT)
29,12€ net

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CM4-IO-BASE-B base board dedicated to Raspberry Pi CM4 modules in a set with a USB HDMI adapter to FCC.

CM4-IO-BASE-B is equipped with special connectors for connecting the module and the outputs of all CM4 module interfaces, including USB, Ethernet, HDMI, DSI, two CSI connectors, 40-Pin GPIO connector compatible with HAT modules. The Mini Base Board is additionally equipped with a real-time clock (RTC) chip, a backup battery socket as well as a fan connector and a microSD card slot. At the bottom of the board there is also an M.2 connector for connecting additional modules or a disk and an FFC connector with a USB 2.0 and HDMI interface. Full documentation is available on the product Wiki page.

The 40-pin connector is color-coded, which makes it easy to connect expansion modules. The board has compact dimensions (85 x 56 mm) corresponding to the dimensions of the Raspberry Pi 4 model B minicomputers, thanks to which, after connecting the Raspberry Pi CM4 module (not included), it can be a replacement for standard Raspberry Pi minicomputers.

Adapter with USB and HDMI connectors connected via FFC tape. It allows you to add two USB connectors and HDMI connectors for base boards.


  • CM4 connector: suitable for all variants of the Raspberry Pi CM4 module (not included)
  • Standard 40-pin Raspberry Pi HAT connector
  • Real time clock (RTC) with battery backup
  • HDMI connector
  • 2 x CSI camera connector
  • DSI Display Connectors
  • RJ45 Gigabit Ethernet connector
  • Built-in USB Hub with 2 USB 2.0 connectors
  • USB type C connector for power and programming
  • MicroSD card slot
  • 5V PWM fan controller with feedback
  • Type C USB power supply
  • Dimensions: 85 x 56 mm

Kit contains

  • CM4-IO-BASE-B module
  • USB HDMI adapter
  • FFC 6-pin cable, pitch 1.0 60 mm
  • FFC 20-pin cable, pitch 0.5 60 mm
  • USB Type-C cable
  • Mounting screw