N-Key Rollover

Introduction

Key roll-over (KRO) defines the maximum number of keys that can be pressed and recognized at one time.

Option	Description
6KRO	6KRO is the firmware default. This allows six keys to be pressed simultaneously in addition to the eight modifier keys (Left/Right for Shift/Ctrl/Alt/Command). This default option strikes a good balance between what is practically useful and compatibility across different computer systems.
12KRO	For users that need more than 6 simultaneous keys, 12KRO is recommended for compatibility reasons.
NKRO	Full n-key rollover is recommended for users that need more than 12 simultaneous keys. While modern operating systems should have no issue handling NKRO, there may be compatibility issues with some computer BIOS.

Keymap Configurator

When using the keymap configurator, the key roll-over setting can be modified by clicking the ⚙ button on the right side of the "Build Firmware" button on the main keymap configuration page.

Important Information

After changing the firmware key roll-over settings, it is strongly suggested that you test the new keyboard firmware over USB to confirm that the new configuration is compatible with your computer. This means either using the dongle USB output or by plugging in the central half.

For devices that connect to the central wirelessly, you may need to reestablish the Bluetooth bond between the device and central. This is easy to do by clearing each Bluetooth profile that is in use. This is necessary because many devices will remember the old key-rollover settings until the bond is reestablished.