> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Mini Base Board (B) for CM5 - Onboard EEPROM and Encryption Chip

**Type:** Product page · **SKU:** WS-30703 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/mini-base-board-b-raspberry-pi-compute-module-5-eeprom-encryption.html ([markdown](https://core-electronics.com.au/mini-base-board-b-raspberry-pi-compute-module-5-eeprom-encryption.html.md))

Mini Base Board (B) designed for Raspberry Pi Compute Module 5, Onboard EEPROM And Encryption Chip...

## Pricing

- **Price:** $40.15 (inc GST) — $36.50 AUD, exc GST
- **Quantity discounts:** 10+ $35.04 (exc GST) · 25+ $33.95 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 300 more in 12–19 days.

## Restrictions

Restrictions apply to this equipment as it uses button/coin cell batteries:

- The equipment is intended to be used in trades, professions or industries
- The equipment is not intended for sale to the general public
- The equipment is not intended to be used where children are present
- You are aware that this equipment may not meet child safety testing requirements as it is not intended to be used by consumers or general public, but rather, is intended to be used in trades, professions or industries in conjunction with the limitations and restrictions listed above
- You are aware that these restrictions are due to a change in [A](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence)[ustralian legislation in 2022](https://www.accc.gov.au/media-release/businesses-on-notice-as-mandatory-button-battery-laws-commence) for button/coin cell batteries
 
![Button Battery Warning](https://core-electronics.com.au/attachments/uploads/iec-button-battery.png)

A declaration of use will need to be submitted during checkout.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-30703:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/WS-30703:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The Mini Base Board (B) for the Raspberry Pi Compute Module 5 provides a robust foundation for building versatile mini-computers. With onboard EEPROM and encryption capabilities, it supports many use cases.

### Technical Specifications

- CM5 Socket: Compatible with all variants of Compute Module 5
- Networking: Gigabit Ethernet RJ45
- USB Ports: USB 3.2 Gen1 × 2, USB 2.0 with 6Pin FFC connector × 2
- MIPI Interface: 4-lane MIPI × 2
- HDMI Port: Dual 4K outputs via HDMI
- EEPROM/Encryption: Onboard chip for personalised security
- Dimensions: 85 × 56mm (board); 90 × 68mm (with case)
 
### How to Use/Installation

- Attach the Raspberry Pi Compute Module 5 into the CM5 socket firmly.
- Connect peripherals using the provided GPIO, Ethernet, and USB interfaces.
 
### Compatibility

- Compute Module 5 Lite/eMMC
- Standard Raspberry Pi HATs
- NVMe SSDs supported via M.2 M KEY
- Networking using Ethernet
- Various USB and HDMI devices
 
### Additional Resources

- Waveshare Wiki for CM5-IO-Base-B
 
### What’s Included

- CM5-IO-BASE-B
- Screw Pack

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-30703-1.jpg)