Fantec QB-X2U31R Benutzerhandbuch Seite 42

7. USB port of your PC must support power-off function so that the
device would go into sleeping mode. Setting up motherboard's
(power management) in S3 is strongly recommended. For more
details, please refer to user guide of motherboard BIOS setting.
FANTEC QB-X2U31R 2-BAY 3.5" RAID
41