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Raspberry Pi CM4 Mini Base Board (B) with RTC & GPIO

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$38 USD
Price subject to change
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for Raspberry Pi Compute Module 4,Mini Base Board (B) with Real-Time Clock and Raspberry Pi 40PIN GPIO Header, Onboard Multiple Connectors (CSI/DSI/RTC/FAN/HDMI/RJ45,etc)

Base board for Compute Module 4 with multiple connectors including CSI/DSI/RTC/FAN/HDMI/Ethernet and onboard 40PIN GPIO. Uses 5V/2.5A USB-C power and supports CM4 Lite/eMMC modules. Note: 5V fan only; DSI0 used, DSI1 not supported

Highlights

  • CM4 socket with color-coded GPIO
  • Onboard CSI/DSI/RTC/FAN/HDMI/RJ45
  • 5V USB-C power input

Pros

  • Multiple onboard connectors (CSI/DSI/RTC/FAN/HDMI/USB/RJ45)
  • Standard CM4 socket with color-coded GPIO header
  • USB-C power interface supports 5V 2.5A

Cons

  • Only supports 5V fan
  • DSI1 display interface not available
  • M.2, USB, Ethernet presence stated but no specific fan compatibility details

Best For

  • CM4-based DIY SBC projects
  • Prototyping CM4 modules with accessory connectivity
  • Media center or compact server builds with CM4
  • Industrial or educational CM4 development kits
  • CM4 Lite/eMMC module test setups
  • CM4 with RTC and multiple I/O peripherals

Features

  • Mini Base Board (B) supports all Compute Module 4 versions using 5V/2.5A USB-C power input
  • Standard CM4 socket with color-coded 40PIN GPIO header for CM4 Lite/eMMC variants
  • Onboard connectors: CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/M.2 slot
  • DSI0 interface used; DSI1 display interface not provided; 5V fan only
  • Type-C port powers board or serves USB slave for image burning; CM4 M.2 screws must match length

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