Mini Base Board (A) designed for Raspberry Pi Compute Module 5
Mini Base Board for Compute Module 5
suitable for evaluating the Raspberry Pi CM5 or being integrated into end products
Powerful functions in a credit card sized body

Specifications
| CM5 socket | suitable for all variants of Compute Module 5 |
| Networking | Gigabit Ethernet RJ45 connector |
| Connector | 16PIN PCIe (PCIe Gen2/3 x1) |
| Raspberry Pi 40PIN GPIO header | |
| USB | USB 3.2 Gen1 Type A × 2, USB 2.0 via 6PIN 1mm FFC connector × 2 |
| MIPI | 4-lane MIPI interface × 2 (22pin 0.5mm FFC connector) |
| Video | HDMI port × 2 (including one port via FFC connector), supports dual 4K outputs |
| Storage | TF card slot for Compute Module 5 Lite (without eMMC) variants |
| Fan header | 5V, 4PIN JST-SH PWM connector |
| Power input | DC 5V 5A |
| Dimensions | 85 × 56mm |
What’s the differences
| CM5 Base Board | Interface count and specifications | |||||||||||
| PoE | Gigabit ETH |
40PIN GPIO |
PCIe | USB① | MIPI | HDMI | RTC | Fan Header② |
Power Input |
Features | ||
![]() mini Base A |
×1 | √ | 16PIN PCIe | 3.0×2 2.0×2 |
×2 | ×2 | ML/CR1220 | √ | 5V | mini size | ||
![]() PoE Base |
√ | ×1 | √ | M.2 M | 3.0×2 2.0×2 |
×2 | ×2 | ML/CR1220 | √ | 5V | USB×4 | |
![]() Raspberry Pi official |
③ | ×1 | √ | M.2 M | 3.0×2 | ×2 | ×2 | ML/CR1220 | √ | 5V | Official IO base board | |
| Note | ① USB 3.0 is equivalent to USB 3.2 Gen1. ② Unless otherwise specified, the Fan header usually is JST-SH type connector. ③ There’s PoE header only on the Raspberry Pi official IO board without PoE circuit, which 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). |
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Connecting with Compute Module 5
standard CM5 socket and color-coded Raspberry Pi 40PIN GPIO header
suitable for Compute Module 5 Lite/eMMC series module

Compact, yet Complete
onboard multiple connectors, more convenient to use

Application example

for reference only, the CM5, displays, and cameras are NOT included.
Connecting to cooling fan

for reference only, the cooling fan is NOT included.
What’s On Board

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CM5 socketsuitable for all variants of Compute Module 5
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40PIN GPIO headerfor connecting various HAT / HAT+ modules
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Power input/Programming5V / 5A power supply, or used for eMMC burning
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PCIe interfacefor connecting various PCIe expansion boards
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PSW Power buttonLong press to force power off, short press to soft power off or on
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STAT LEDDual-color status LED
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BOOT buttonPress before powering on and release after powering on to enter the burning mode
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Dual MIPI interfacesfor connecting DSI displays and CSI cameras
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HDMI0 connectorHDMI0 port, supports 4K output
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USB 3.2 Gen1 ports2x USB 3.2 Gen1 high-speed ports, supports 5Gbps synchronous operation
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RJ45 Gigabit Ethernet portSupports 10M / 100M / 1000M network access
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4PIN JST-SH PWM Fan headerfor connecting cooling fan, 5V power supply
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TF card slotfor connecting a TF card with pre-burnt image (Lite variant ONLY)
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IO-VREF selectionCM5 IO logic level: 3.3V (default) or 1.8V
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Other function pinsWIFI / BT hardware disable or write protection
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HDMI1 FFC connectorHDMI1 port, supports 4K output, can be connected through an adapter
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USB 2.0 FFC connectorcan be connected through an adapter
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RTC battery holderSupports CR / ML1220 button cell
Outline dimensions




