HP t5710 - Thin Client Quick Reference Manual page 55

Quick Reference Guide
2. Click Next.
3. At this point, attach to the unit a DOK. The DOK drive letter and
size are displayed.
The DOK must be greater in size than the onboard flash disk. As
a result, if your thin client has 512 MB Flash, then the USB flash
drive must be 1 GB.
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Control Panel extended selections
4-11