I have no idea where you find an acros 325se. It's not on Acer's UK or US website. Manufacturer would be the best to find the actual ac adapter specifications required. Anyways you can look under your laptop for power info. It'll say something like DC19V 3.42A. Then get something like this.http://www.newegg.com/Product/Product.aspx?Item=N82E16834991102
You need to match the Voltage and Amps on the laptop to the Voltage and Amps provided by the AC adapter.
or something like this with Select a Volthttp://www.newegg.com/Product/Product.aspx?Item=N82E16834991198