PocketBook Aqua - Manual (Page 15)

Getting Started 15
(up to 30 seconds) to process commands. If it does not
help, you can restart it by pressing On/Off button for 10
seconds.
LOADING FILES
Connect the Device to the PC using microUSB cable.
NOTE The Device should be kept on while transferring files.
You will be prompted to select USB mode: PC Link or
Charge either. Select PC Link . Operating system of computer
will detect Device’s storage as removable disk. Now you can
copy files to the Device using Explorer or other file manager.
ATTENTION After copying files safely remove the Device before
disconnect the cable!