I have been buying the $10 adapters. They last about three months and get very hot and loose connection. This adapter does not get hot and it really does have a three prong ac plug. Well made. I have had it a week and should work a long time for me. Cheap adapters maybe too cheap. I use this adapter on my Dell Inspiron 1525 laptop. This is a PA-12 adapter. This is part of the model number. The description should list the PA-12.
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