HP LaserJet Enterprise 700 color MFP M775 series - Manual (Page 171)

c. Configure the options that you want to customize.
d. Click the Apply button at the bottom of the page.
5. Enable the Save to USB feature.
a. Click the Save to USB Setup link.
b. Select the Enable Save to USB check box.
c. Click the Apply button at the bottom of the page.
ENWW Set up scan/send features 157