LG Rumor User Manual page 122

Note
No driver installation is required for Windows 2000/ME/XP
users. If you use Windows 98/98SE, you have to download and
install the USB Mass Storage Driver from the SprintWeb site at
.
www.sprint.com
To avoid loss of data, DO NOT remove the USB cable, the
microSD card, or the battery while files are being accessed or
transferred.
DO NOT use your computer to change or edit folder or file
names on the minSD, and do not attempt to transfer large
amounts of data from the computer to the microSD card.
Doing so may cause the microSD card to fail.
DO NOT turn off or restart your computer, or put it into
standby mode, while using a mass storage device. Doing so
will result in loss or damage of data.
While you are connected to the computer, your phone's screen
will display "Phone Off."You cannot make or receive calls.
If you connect a mass storage device to a peripheral device,
your device may not work properly.
Section 2I: Using the microSD Card 105