Base board for Raspberry Pi CM5 M.2 HDMI Ethernet USB Eeprom Encryption chip
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Mini Base Board (B) - Base board for Raspberry Pi CM5 with EEPROM and encryption chip
A miniature, high-performance base board designed for the Raspberry Pi Compute Module 5 to build a compact minicomputer with HDMI output, high-speed Ethernet, M.2 support, multiple USB ports and additional security features.
Key features
- CM5 socket - compatible with all versions of Compute Module 5 (Lite and eMMC)
- RJ45 network connector - Gigabit Ethernet
- M.2 M Key connector - for module sizes 2230 / 2242
- Main GPIO connector - 40 pin, compatible with Raspberry Pi
- USB ports: 2× USB 3.2 Gen1 Type-A 2× USB 2.0 (FFC 6PIN connector, 1mm)
- 2× MIPI interface (4-line, FFC 22PIN connector)
- 2× HDMI output (including one via FFC) - dual 4K support
- TF card slot - for Compute Module 5 Lite version (without eMMC)
- Fan connector - 5V, 4PIN JST-SH with PWM support
- Built-in EEPROM and encryption chip - secure symmetric authentication
- Power supply: DC 5V / 5A
- Board dimensions: 85 × 56 mm
On-board EEPROM and encryption chip
Expandable with additional HDMI USB ports (adapter not included)

Board description

- CM5 socket
Suitable for all variants of Compute Module 5 - GPIO 40PIN connector
for connecting different HAT / HAT+ modules - Power supply / programming
5V / 5A power supply used for eMMC - Encryption chip (ATSHA204)
Supports fast and secure symmetric authentication - PSW power button
Long press - forced off, short press - soft on/off - STAT status LED
Two-colour status LED - BOOT button
Press before power on and release after power on to enter recording mode - Dual MIPI interfaces
for connection of DSI displays and CSI cameras - HDMI0 connector
HDMI0 port, supports 4K output - USB 3.2 Gen1 ports
2x high-speed USB 3.2 Gen1 ports, supports 5Gbps synchronous operation - RJ45 Gigabit Ethernet port
Supports 10M / 100M / 1000M networks
- PWM 4PIN JST-SH fan connector
For connection of cooling fan, 5V power supply - TF card slot
for connecting a TF card with recorded system image (Lite variant only) - IO-VREF selection
IO CM5 logic level: 3.3V (default) or 1.8V - Other function pins
Hardware disable WIFI / BT or write protection - HDMI1 FFC connector
HDMI1 port, supports 4K output, can be connected via adapter - USB 2.0 FFC connector
can be connected via adaptor - RTC battery holder
Supports CR / ML1220 button cells - M.2 M KEY connector
Supports NVMe 2230/2242 SSD and Raspberry Pi 5 boot with SSD - I2C bus selection
Switching I2C0 and I2C1 (default) for encryption chip and EEPROM - CAT24C32
EEPROM chip
Dimensions

Kit contents
- CM5-IO-BASE-B x1
- Screws
- Screws






