I-O DATA HFAS1-XS20U Setup Manual page 18

2.7.2. Registering the USB HDD as a backup one
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Connect a USB HDD that has the same capacity as this unit, or larger, to a USB port
on the back of this unit.
Please connect only one USB HDD.
A USB HDD for backup is registered as one for backup use, and any data on it will be deleted.
So that you do not make a mistake and lose any important data, please only connect one USB
HDD with this operation.
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2.1. Open the Settings Screen
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Go to [Table of Contents]
2. Getting More out of this Unit – 2.7. Backing Up Music
Click [USB DEVICE SETTINGS]
Click [Registration of the device for
backup]
Click [NEXT]
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