I have a sony vaio laptop but the plug in it has broke. The original plug was a 5amp fuse ss145/a. And was 250w 2.5v. The replacement plug I found was also 250w 2.5v and a 5amp fuse ss145/a. The plugs are exactly the same but just different branded and the top pin is metal like the other pins on the replacement plug unlike the original broken charger where the top pin is just black. I just wanted to know if this is safe to plug into my laptop. I plugged it in and it works but in the long run is it safe?
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