Samsung SCH-R270ZKAMTR - Manual (Page 118)

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Quick Search
When set to On, the Quick Search option provides an easy
way to find Contacts from Standby mode.
In Standby mode, just press the number keys that
correspond to the first few letters of a Contact name, then
press the Navigation key Up (to find a matching Contact).
PC Connection
The PC Connection option lets you enable (USB Mass Storage
setting, the default) or disable (No Connection setting) your
R270’s ability to act as a USB flash drive, provided you have
installed an optional microSD or microSDHC Memory Card
and an optional USB Data Cable.
Note:For more information, refer to “Install a Memory Card”
on page 11.
With PC Connection set to USB Mass Storage, you can transfer
music, sound, ringtone, and image files to and from a
microSD or microSDHC Memory Card.