# AWAC vs RTC · GitBook

> Last modified: Thu Jun 18 2020 03:09:33 GMT+0000 (Coordinated Universal Time)

# Fixing System Clocks (SSDT-AWAC/RTC0)

- What this SSDT does
- Methods to make this SSDT

## What this SSDT does

The purpose of SSDT-AWAC/RTC0 is to fix the system clocks found on newer hardware, maily found in the following:

- B360
- B365
- H310
- H370
- Z370 (Gigabyte and AsRock boards with newer BIOS versions)
- Z390
- B460
- Z490
- 400 series (Comet Lake, including Z490)
- 495 series (Icelake)
- X299X (10th Gen refresh, AsRock and Asus don't use the -x naming so you'll need to double check)

SSDT-AWAC tries to re-enable the old RTC clock that is compatible with macOS, while SSDT-RTC0 will instead create a "fake" RTC clock if there is no legacy one to enable.

## Methods to make this SSDT

For the RTC fix, there are 2 methods you can choose from:

- Prebuilt
- Manual

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