It is not possible external SD to write it directly by ACER A500 by way of USB from PC.
When you want to write the music file etc.
(1)It writes it in an internal memory.
(2)It moves to external SD with the tool.
is needed. This was automated.
Please do the file copy from PC with the screen seen while the application program is starting.
This application program is observed the registered directory, and moves to external SD.
At that time, the movement notification is done. (Only Audio)
Confirming the operation is only Vista.
#It is thought that it is influenced by operation of the MTP driver on the PC side, and use it, please after it verifies it well.