It depends upon the Voltage and Wattage of the Acer Aspire Power Adapter
In your Samsung:R710 laptop
If you are using battery: AA-PB2NC6B , you can use a 11.10V 60Watt Power Adapter
If you are using battery: AA-PL2NC9B , you can use a 11.10V 90Watt Power Adapter
If you are using battery: AA-PA1N90W , you can use a 19V 90Watt Power Adapter
Looks like a power Adapter ~ 19V 90Watt is preferred