User's Manual

3 Using the operating system
l Internal SD card is similar to the hard disk in a computer and is used for storing data and/or
apps.
l Removable SD card refers to micro SD cards inserted into the handheld's removable SD card
slot.
The Juno T41 handheld's internal storage is where most applications and private data for those
applications are stored. The operating system manages and carefully guards internal storage,
because it can contain your private information; you cannot view its contents when you connect
the handheld to a computer with a USB cable.
The handheld's internal SD card (sometimes just called "SD card") is the primary non-removable
storage for data files. Some applications are also designed to be stored on this card, rather than in
internal storage, by default or as an option. When the Juno T41 handheld is connected to a
computer (see Connecting and syncing to an office computer, page 58), you can copy files to and
from the internal SD card.
The handheld also has a slot for a removable SD card. When a removable card is inserted, it is
mounted as /removablesdcard. Like the internal SD card, this storage device is accessible when the
Juno T41 handheld is connected to a computer.
To check the memory capacity on the handheld, tap / Settings/ System / Memory. Then
select the Main tab, and the Storage Card tab to check the capacity of each.
Trimble recommends that you regularly copy important data to an office computer. For more
information, see Connecting and syncing to an office computer, page 58.
Note – The Windows Embedded Handheld operating system does not have a Recycle Bin. Once a file is
deleted, it cannot be recovered.
Memory cards
As an alternative to storage memory, you can save data to a memory card. Use a MicroSD memory
card to securely transfer data to and from another device that supports MicroSD memory cards.
The device supports up to 32 GB SDHC microSD storage cards. SDXC cards are not supported.
WARNING- The presence of any dust or moisture in the memory card slot may adversely affect the device and
void your Trimble warranty. To prevent dust or moisture entering the memory card slot:
– Make certain that the storage card slot door is attached correctly when you are using the handheld outdoors.
–When inserting or removing a memory card, place the handheld on a dust-free indoor surface.
WARNING - Static electricity can harm electronic components inside your handheld. To prevent static damage:
- Discharge static electricity from your body before you touch any of the electronic components inside your device,
such as a memory module. You can do so by touching an unpainted metal surface.
Trimble Juno T41 User Guide 51