ASROCK 1U2-X570/2T User Manual page 17

Installing the 2.5" HDD
You can have both a 2.5" and a 3.5" HDD installed on the HDD Tray 0. Please intall the 2.5"
HDD first before installing a 3.5" HDD. See the following for detailed instructions.
1. Place a 2.5" HDD into the bracket with the printed circuit board side facing down.
Carefully align the mounting holes in the hard drive and the bracket.
2. Secure the hard drive using the screws.
3. Lower the HDD tray into the chassis.
4. Hand tighten the thumbscrew to secure the HDD tray into place.
(for HDD Tray 0 only)
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