I have two questions

The first one it's about buying a new AC adapter for my Dell laptop the specs for the original one and the one i've found are this

**ORIGINAL ->** INPUT: 100-240V **1.6A** 50-60Hz / OUTPUT: 19.5V 3.34A / 65w / PA-12 FAMILY - MODEL: LA65NS2-01

**NEW ->** INPUT: 100-240V **1.5A** 50-60Hz / OUTPUT: 19.5V 3.34A / 65W / PA-12 FAMILY - MODEL: LA65NS1-00

As you might notice, everything is the same except for the input amperage, my question is there is a problem with that, this will harm my laptop in some way? or the only specs that really matter are the output ones?

The second problem I have is since my laptop is from Dell, in some webpages people says that almost every non OEM accesories, like AC adapters, batteries, etc. doesn't work, for example, if I connect a new AC adapter and it is not from Dell this will work but will no charge my battery at all, and for what I have been reading, AC adapter come with something than allows the computer recognize that it's not OEM, and this is probably what will happen... The question is, there is some way that I can bypass this restiction? maybe BIOS configuation or something?

By the way my laptop it's a Dell Inspiron 14' series 5000 model 5447

Thanks in advance