Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 116)

DRIVER INSTALLATION
116
* If your mac version is below 11.0, you can skip this step
Step 1. Start up your computer in macOS Recovery
(1-1). Choose “ Shut Down ”.
(1-2). Press and hold the power button on your Mac until you
see “ Loading startup options ”.
(1-3). Click “ Options ”, then click “ Continue ”. If requested, en-
ter the password for an administrator account.