Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 123)

DRIVER INSTALLATION
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4. If you have no need to change the install location or select to
install special components, you can skip the step 4-1 and
step 4-2, just click on the "Install" button to continue the
standard (default) installation procedure.
4-1. Click on the "Change Install Location" button to select
the disk where you want to install the MRAID software.