# Detailed Reference

- [Installation](/product-documentation/m2-docs/detailed-reference/installation.md): Under-the-dash (UTD) vs. under-the-hood (UTH) and their respective pinouts
- [Processor](/product-documentation/m2-docs/detailed-reference/processor.md): Details on the processor board and its components
- [Pin Mapping](/product-documentation/m2-docs/detailed-reference/pin-mapping.md): Use these pin names when programming in the Arduino IDE.
- [Automotive Interfaces](/product-documentation/m2-docs/detailed-reference/interfaces.md)
- [Communication](/product-documentation/m2-docs/detailed-reference/communication.md): M2 features an XBee socket and micro USB.
- [M2 Bee-Compatible Add-ons](/product-documentation/m2-docs/detailed-reference/communication/m2-bee-compatible-add-ons.md)
- [Cellular](/product-documentation/m2-docs/detailed-reference/communication/cellular.md)
- [Power](/product-documentation/m2-docs/detailed-reference/power.md)
- [Storage/Memory](/product-documentation/m2-docs/detailed-reference/memory.md): Storage available either via EEPROM or microSD
- [12V IO](/product-documentation/m2-docs/detailed-reference/12vio.md): Want to learn more about the 12V IO available? Here are the ins and outs...
- [LEDS/Buttons](/product-documentation/m2-docs/detailed-reference/leds-buttons.md)
- [Enclosures](/product-documentation/m2-docs/detailed-reference/enclosures.md): Protect your M2!
- [Breakout Board](/product-documentation/m2-docs/detailed-reference/byob.md): BYOB - Bring Your Own microcontroller Board
- [Schematics and Source](/product-documentation/m2-docs/detailed-reference/open-source.md)