Guralp Systems CMG-DCM build <10,000 - Manual (Page 197)

Operator's Guide
14.2.3.2 USB host mode
If a USB storage device is connected to the USB port (who's pin-out is
given in section 14.3.8 on page 205), it will be mounted under
/media. It can be used to store seismic data by selecting “External
USB drive on mil-spec connector” from the “Recording destination”
drop-down menu on the “Disk recording” menu (see section 10.2 on
page 109).109
November 2010 197