Question Question about laptop charger

Hi, basic question.
My sister has a Dell Inspiron 5720 and her charger is acting up,and she needs a new one urgently, because she needs her laptop for work. Her charger is 90W, 19.5V, 4.62A, and we found a this one for €20 at our local PC shop. Could it work?

Edit: her current chargers dimensions are 7.4mm x 5mm, so are the dimensions in the one that i linked.
 
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