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![The ZX Spectrum Next Issue 2 Mainboard with optional equipment locations](/documentation/manual/rev3/figures/p218-issue2-mainboard.png)

Diagram Legend

> ⚠
>
> WARNING! WARNING! WARNING! WARNING!\
> Before attempting any hardware addition, make sure all\
> power is disconnected first!!!\
> ALL USER APPLIED MODIFICATIONS COME AT THE\
> USER'S OWN RISK.\
> **!!!IRREPARABLE DAMAGE MAY OCCUR!!!**

| # | Description |
|---|---|
| A | Real Time Clock |
| B | WiFi module (ESP) |
| C | RPi0 Accelerator |
| D | Memory |

*The ZX Spectrum Next **Issue 2** Mainboard with optional equipment locations*

