ASROCK 770 EXTREME3 User Manual page 42

CHB DATA Drive
Use this to adjust values for CHB DATA Drive. Configuration options: [Auto],
[0.75x], [1.00x], [1.25x] and [1.50x]. The default value is [Auto].
CHB DQS Drive
Use this to adjust values for CHB DQS Drive. Configuration options: [Auto],
[0.75x], [1.00x], [1.25x] and [1.50x]. The default value is [Auto].
CHB Processor ODT
Use this to adjust values for CHB Processor ODT. Configuration options:
[Auto], [240 ohms], [120 ohms] and [60 ohms]. The default value is [Auto].
Would you like to save current setting user defaults?
In this option, you are allowed to load and save three user defaults
according to your own requirements.
4 2 4 2 4 2 4 2 4 2