Mini Base Board (B) Designed for Raspberry Pi Compute Module 4

SKU: 19602
Part Number: CM4-IO-BASE-B
Brand: Waveshare

$36.99
$36.592+
$36.393+
$36.314+

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Description

Details

Mini Base Board (B) designed for Raspberry Pi Compute Module 4
Mini Base Board for Compute Module 4

suitable for evaluating the Raspberry Pi CM4 or being integrated into end products

Powerful functions in a credit card sized body

Specifications
CM4 socket suitable for all variants of Compute Module 4
Networking Gigabit Ethernet RJ45 connector
M.2 M KEY, supports communication modules or NVME SSD
Connector Raspberry Pi 40PIN GPIO header
USB USB 2.0 Type A × 2, USB 2.0 via FFC connector × 2
Display MIPI DSI display port (15pin 1.0mm FPC connector)
Camera MIPI CSI-2 camera port × 2 (15pin 1.0mm FPC connector)
Video HDMI port × 2 (including one port via FFC connector), supports 4K 30fps output
RTC Real-time clock with battery socket and ability to wake Compute Module 4
Storage MicroSD card socket for Compute Module 4 Lite (without eMMC) variants
Fan header allows speed adjustment and measurement, 5V
Power input 5V
Dimensions 85 × 56mm
What's the differences
CM4 Base BoardInterface count and specifications
PoEGigabit
ETH
40PIN
GPIO
PCIeUSB①DSIHDMICSIRTCFan
Header
Power
Input
Features

mini Base A
  ×1 M.2 M 2.0×4 ×1 ×2 ×2   5V 5V mini size

mini Base B
  ×1 M.2 M 2.0×4 ×1 ×2 ×2 5V 5V mini size

Dual Gigabit ETH
  ×2   3.0×3 ×1 ×2 ×2 5/12V 7-36V  

IoT Dual Gigabit ETH
  ×2   3.0×2 ×1 ×2 ×2 5/12V 5V 5G/4G support

IoT Base
×1   Gen2×1 2.0×2 ×2 ×2 ×2 5/12V 7-36V 5G/4G support
RS232
RS485
ADC

PoE Base (B)
×1 Gen2×1 2.0×4 ×2 ×2 ×2 5/12V 5V RS232
RS485

PoE Base
×1   3.0×4 ×2 ×2 ×2 5/12V 7-36V  

Raspberry Pi official
×1 Gen2×1 2.0×4 ×2 ×2 ×2 12V 12V  

Wireless base
  ×1   M.2 B /
Mini-PCIe
2.0×3   ×1 ×1 5/12V 5V or
7-36V
5G/4G support
RS485
CAN
rail-mount
Note ① USB 3.0 is equivalent to USB 3.2 Gen1
② There's PoE header only on the Raspberry Pi official IO board without PoE circuit, that means additional PoE module is required for the official IO board to enable PoE feature.
Unless otherwise specified, the PoE feature here stands for integrating 802.3af-compliant PoE circuit (5V/2.5A).
Connecting with Compute Module 4

standard CM4 socket and color-coded Raspberry Pi 40PIN GPIO header
suitable for Compute Module 4 Lite/eMMC series module

Compact, yet Complete

onboard multiple connectors including:
CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/Micro SD Card Slot/M.2 Slot

What's On Board
  1. CM4 socket
    suitable for all variants of Compute Module 4
  2. Power input/Programming
    5V/2.5A power supply, or used for eMMC burning
  3. DISP
    MIPI DSI display port
  4. FAN
    for connecting cooling fan, allows speed adjustment and measurement
  5. CAM
    2x MIPI CSI camera ports
  6. HDMI0 connector
    HDMI0 port, supports 4K 30fps output
  7. USB 2.0 ports
    2x USB 2.0 ports, for connecting sorts of USB devices
  8. Gigabit Ethernet connector
    Gigabit Ethernet RJ45 connector, with 10 / 100 / 1000M network support
  9. M.2 indicator
    indicating the operating status of M.2 interface
  10. ACT indicator
    indicating the operating status of Raspberry Pi
  11. PWR indicator
    indicating the status of Raspberry Pi power supply
  12. BOOT selection
    ON: CM4 would be booted from USB-C interface
    OFF: CM4 would be booted from eMMC or Micro SD card
  1. 40PIN GPIO header
  2. Micro SD card slot
    for connecting a Micro SD card with pre-burnt image (Lite variant ONLY)
  3. HDMI1 FFC connector
    HDMI1 port, supports 4K 30fps output
  4. USB 2.0 FFC connector
    can be connected through an adapter
  5. FE1.1S
    USB HUB chip, expanding one USB port to 4x ports
  6. M.2 slot
    supports sorts of NVME SSD, or communication modules with PCIE M.2 KEY-M interface
  7. RTC chip
    allows RTC-related functions like wakeup, shutdown, reboot, and more
  8. RTC interrupt selection
    PI-RUN: CM4 reboot on RTC interruption
    GN-EN: CM4 shutdown on RTC interruption
    D4: D4 pin is triggered on RTC interruption
  9. EMC2301
    fan controller, for speed adjustment / measurement
  10. RTC battery holder
    supports CR1220 button cell
Outline dimensions
Application example

working with displays and cameras

working with an additional SSD

for reference only, CM4, displays, cameras, and SSD are NOT included.
Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.

Weight: 0.049 kg

Quick Overview

  1. CM4-IO-BASE-B x1
  2. SSD mounting screw x1
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