8
intervals. Charging takes up to 3 hours. you can retrieve the battery level and other information via
"information service". To find out more, see the section "Information Service".
Please note that the battery is also charged while the device is connected via USB cable to a computer.
Your M312 Ace is equipped with a powerful rechargeable lithium polymer battery, which holds out in
standby mode for several weeks without recharging or allows continuous operation of up to 20 hours. This
value is reached when listening to music or books on headphones with normal playback speed and
medium volume. Please note that the playback via the built-in speaker requires more energy. Also high
playback speeds, high volume and playing text files require more energy and consequently result in a
shorter running time per battery charge.
2.3.2.
Connecting Headphones
If you do not want to hear playback of your Milestone 312 Ace through the internal speaker, you can
connect any headphones with a 3.5 mm jack on the bottom right on the device. The output is then
switched from speakers to headphones. Please note that your Milestone 312 Ace has Two independent
volume levels - one for the internal speakers and one for the headphones.
2.3.3.
USB connection to computer
To connect your Milestone 312 Ace to a computer, you can use the supplied USB cable. Connect the cable
end with the small mini-USB plug to the mini-USB port on the top of your milestone. The end with the
somewhat larger USB plug will fit into any traditional USB jack on the computer.
Your M312 Ace confirms a successful connection with the message "Connection activated" and appears as
an external drive named "M312ACE" on your computer. Now you can manage the computer's files and
folders on both devices, replace, rename, delete or copy. Even with large amounts of data enables you to
fast USB 2.0 connection pleasantly short transfer times for DAISY books, music files, voice messages, text
files and much more. After the data transfer is complete, please make sure that you treat it as a normal
USB flash drive, properly disconnect the USB drive of your computer.
Hint: To prevent data loss, we recommend that you back up your M312 Ace at regular intervals to the
computer.
Note: The buttons on your Milestone are locked during an active connection.
2.3.4.
External microphones and line-in
For your recordings, you can use the built-in microphone or connect an external microphone with a 3.5 mm
plug to the circular connector on the top edge of the Milestone. You can also connect external devices to
this line-in jack, if you use a stereo audio cable with 3.5 mm jack. For more information about external
microphones and line-in, see the "Recorder" section.
2.3.5.
SD Memory Card
Your M312 Ace has an internal memory of 12 gigabytes. With SD or SDHC memory card you can expand
the existing memory to store more books, music, voice notes, and other files.
M312 Ace supports MMC, SD and SDHC memory cards with capacity of up to 32 gigabytes. Such memory
cards can be inserted on the right, the narrow side of the device in the elongated opening. Slide the card
into the slot until it clicks. Please take care when you insert the card. You can remove the card by gently
pushing inwards, to loosen it from the fixing.
SD and SDHC cards are available in different memory sizes from various manufacturers. Bones
recommends SD cards from SanDisk, Kingston, Transcend and Toshiba, as these have proven best.
Note: Make sure that the SD memory card is inserted correctly. The card has a ribbed body. There are the
electrical contacts. When inserting the card, please make sure that the ribbed side goes into the machine
pointing downwards.
