Rosewill R2-RAID - Manual (Page 7)

Server RAID System [ R2-RAID ] User Manua
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Hard Drives Installation Guide
You may select function by switching jumper on PCB or use software to
operate (GUI mode only).
Always press reset button after changing the setting of switching jumpers.
Backup your data before formatting hard drives.
The device can support two equal or unequal capacity hard drives.
STEP1: Switch the power button to power on.
STEP2: Switch the power button to power on.
STEP3: Press reset button to reset the device.
Reset Button Switching Jumper