<Reference>
Since external device cannot be recognized, before installing, please, ask to the shop.
2.3.3.5 USB Device Connection
USB port is for the simple video copy (within 1 hour) on USB Flash memory. Its recommended
specification is same as below.
USB Spec. Ver. 2.0
Device USB Memory Stick,
Voltage/electric
current
Max. 200mA per DC 5V / Port
<Reference>
It should be formatted by FAT32.
In case of normal connection, if executing Copy menu, disk will be recognized same as