Leica GR10 Operational Manual page 202

Operational Manual (Online Help)
Please make sure the USB hard drive used with the GR25 complies with this specification. If a USB hard disk
is used that does not comply with this specification, it is highly recommended to self-power the hard disk
when used with the GR25 receiver.
External memory sticks are powered by the GR25.
When the external USB drive is formatted by the receiver, the exFAT file system is used. Note that Windows
XP does not support this file system, and will not read the drive without an additional update, which is
available here:
http://www.microsoft.com/download/en/details.aspx?id=19364
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