SKU:WSAL24009
CM4-IO-BASE-BOX-B + USB HDMI Adapter, for Raspberry Pi Compute Module 4
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Waveshare CM4-IO-BASE-B (Full Ver.) Inside, Fast And Easy To Build A Mini-Computer
* Please refer to the part list for detailed package content

Mini Base B Full Verthe CM4-IO-BASE-B bare board only

Mini-Computer Kit In addition to the CM4-IO-BASE-B base board, it is equipped with an Aluminum Alloy case, power supply and fan, etc.

CM4-IO-BASE-B + USB HDMI AdapterExpanding additional 2x USB And 1x HDMI Connectors Via FFC, in addition to the CM4-IO-BASE-B base board, it is equipped with a USB HDMI Adapter, FFC Cable and USB Cable, etc

Mini-Computer Kit + USB HDMI AdapterExpanding additional 2x USB And 1x HDMI Connectors Via FFC, in addition to the CM4-IO-BASE-B base board, it is equipped with an Aluminum Alloy case, USB HDMI Adapter, 5V 3A power supply, FFC Cable and USB Cable, etc
make it easy to build your own Raspberry Pi CM4 mini PC

| CM4 socket | suitable for all variants of Compute Module 4 |
|---|---|
| Networking | Gigabit Ethernet RJ45 connector |
| M.2 M KEY, supports communication modules or NVME Solid State Drives | |
| 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 | TF card socket for Compute Module 4 Lite (without eMMC) variants |
| Fan header | allows speed adjustment and measurement, 5V |
| Power input | 5V |
| Dimensions | 85 × 56mm |
| CM4 Base Board | Interface count and specifications | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PoE | Gigabit ETH | 40PIN GPIO | PCIe | USB① | DSI | HDMI | CSI | RTC | Fan Header | Power Input | Features | |
NANO A |
√ | 2.0×1 | ×1 | 5V | CM4 sized | |||||||
NANO B |
×1 | √ | 2.0×1 | ×1 | ×1 | ×1 | 5V | CM4 sized | ||||
NANO C |
√ | 2.0×1 | ×1 | ×1 | ×1 | 5V | Onboard Camera | |||||
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 | |
mini Base C |
×1 | √ | M.2 M | 2.0×2 | ×1 | ×2 | √ | 5V | 5V | Dedicated 40PIN LCD Connector | ||
Touch screen |
×1 | M.2 M | 2.0×4 | ×1 | ×1 | 5V | IPS screen | |||||
Mini Dual Gigabit |
×2 | √ | 2.0×1 | 5V SH1.0 | 5V | dual ETH | ||||||
Binocular camera |
×1 | √ | M.2 M | 2.0×4 | ×2 | 5V | dual 8MP cameras | |||||
4CH RS485 |
×1 | 2.0×2 | ×1 | ×2 | ×1 | 5V | 7-36V | dual ETH | ||||
WIFI6 DUAL ETH |
×1 | √ | M.2 E | 2.0×3 | ×1 | ×2 | ×2 | ×1 | 5/12V | 7-36V | WIFI6 dual ETH | |
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 supportRS232RS485ADC | |
PoE Base (B) |
√ | ×1 | √ | Gen2×1 | 2.0×4 | ×2 | ×2 | ×2 | √ | 5/12V | 5V | RS232RS485 |
PoE UPS Base |
√ | ×1 | √ | M.2 M | 2.0×4 | ×1 | ×2 | ×2 | √ | 5/12V | 7-36V | UPS |
PoE Base |
√ | ×1 | √ | 3.0×4 | ×2 | ×2 | ×2 | √ | 5/12V | 7-36V | ||
Raspberry Pi official |
② | ×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 | |||
UPS Wireless base |
×1 | M.2 B | 2.0×3 | ×1 | ×1 | √ | 5/12V | 5V or 7-36V | With UPS 5G/4G support RS485 CAN rail-mount | |||
NAS Mini Computer |
×2 | √ | M.2 M×2/ Mini-PCIe | 3.0×2 | ×2 | ×2 | √ | 5V | dual M.2 M KEY slots | |||
5″ touch screen |
② | ×1 | √ | M.2 M | 2.0×4 | ×1 | ×2 | √ | 5/12V | 5V | ||
7″ all-in-one |
×1 | M.2 M | 2.0×4 | used | ×1 | used | √ | 5/12V used | 7-36V | touch screen camera speaker | ||
13.3″ all-in-one |
×1 | 2.0×2 | 12V | HD touch screen | ||||||||
13.3″ Magic Mirror |
×1 | 2.0×2 | 12V | HD screen, Speech Assistant | ||||||||
| 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). | |||||||||||
onboard multiple connectors including: CSI/DSI/RTC/FAN/HDMI/USB/RJ45 Gigabit Ethernet/TF Card Slot/M.2 Slot
each cut-out is completely aligned with the connector
More USB And HDMI Connectors Via FFC
comes with cooling fan, combined with the airflow vent, better heat dissipation
wall mount holes on two sides, handy for mounting

- CM4 socket suitable for all variants of Compute Module 4
- Power input/Programming 5V/2.5A power supply, or used for eMMC burning
- DISP MIPI DSI display port
- FAN for connecting cooling fan, allows speed adjustment and measurement
- CAM 2x MIPI CSI camera ports
- HDMI0 connector HDMI0 port, supports 4K 30fps output
- USB 2.0 ports 2x USB 2.0 ports, for connecting sorts of USB devices
- Gigabit Ethernet connector Gigabit Ethernet RJ45 connector, with 10 / 100 / 1000M network support
- M.2 indicator indicating the operating status of M.2 interface
- ACT indicator indicating the operating status of Raspberry Pi
- PWR indicator indicating the status of Raspberry Pi power supply
- BOOT selection ON: CM4 would be booted from USB-C interface OFF: CM4 would be booted from eMMC or TF card
- 40PIN GPIO header
- TF card slot for connecting a TF card with pre-burnt image (Lite variant ONLY)
- HDMI1 FFC connector HDMI1 port, supports 4K 30fps output
- USB 2.0 FFC connector can be connected through an adapter
- FE1.1S USB HUB chip, expanding one USB port to 4x ports
- M.2 slot supports sorts of NVME Solid State Drives, or communication modules with PCIE M.2 KEY-M interface
- RTC chip allows RTC-related functions like wakeup, shutdown, reboot, and more
- 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
- EMC2301 fan controller, for speed adjustment / measurement
- RTC battery holder supports CR1220 button cell
Suitable for binocular Vision Raspberry Pi Projects
Access to more peripherals via USB HDMI Adapter
Working With Additional Solid State Drives

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.
Lieferumfang
CM4-IO-BASE-B
- CM4-IO-BASE-B x1
- Solid State Drives mounting screw x1
CM4-IO-BASE-BOX-B
- CM4-IO-BASE-B x1
- Metal case (top and bottom) x1
- Fan-4010-PWM-5V x1
- OPTIONS 5V 3A USB-C power adapter x1
- Screwdriver x1
- Screws pack x1

CM4-IO-BASE-Acce B
- CM4-IO-BASE-B x1
- USB HDMI Adapter x1
- FFC cable 6PIN 1.0 pitch 60mm x1
- FFC cable 20PIN 0.5 pitch 60mm x1
- USB-A to USB-C cable 1m x1
- Solid State Drives mounting screw x1

CM4-IO-BASE-Acce D
- CM4-IO-BASE-B x1
- Metal case (top and bottom) x1
- USB-A to USB-C cable 1m x1
- USB HDMI Adapter x1
- FFC cable 6PIN 1.0 pitch 60mm x1
- FFC cable 20PIN 0.5 pitch 60mm x1
- Fan-4010-PWM-5V x1
- OPTIONS 5V 3A USB-C power adapter x1
- Screws pack x1
- Screwdriver x1
Payment methods
Payment methods-
Vendor:
WaveShare
- Tags: Brand_waveshare, Cat_board, Cat_kit, Compat_raspberry_pi, Platform_raspberry_pi, Sub_4s, Sub_compute_module_4

NANO A
NANO B
NANO C
mini Base A
mini Base C
Touch screen
Mini Dual Gigabit
Binocular camera
4CH RS485
WIFI6 DUAL ETH
Dual Gigabit ETH
IoT Dual Gigabit ETH
IoT Base
PoE Base (B)
PoE UPS Base
PoE Base
Raspberry Pi official
Wireless base
UPS Wireless base
NAS Mini Computer
5″ touch screen
7″ all-in-one
13.3″ all-in-one
13.3″ Magic Mirror
