Download here the Acer Aspire One AO725 Windows 8 x64 Professional Upgrade. Free of the driver can you click the link : Touchpad Driver ELANTECH 11.6.9.1 180.4 MB . But if you want to see the more complete driver AO725 Windows 8 x64 :
http://acer.supportscentre.com/acer-aspire-one-ao725-windows-8-x64-professional-upgrade.html
for Window 8 Chinese version :
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