ipad 3 wont charge in a computer and home button issue

so i'm working on an ipad 3 that had a damaged charge port. i swapped the charging port out and then when i closed it up and went to test it out it started to charge. now, i dont have a 5v 2a charger so i'm not surprised to it charging slow but i wanted to make sure it would work sufficiently. i then plugged it into my computer and it says that it's not charging, although it's acknowledging being plugged in. i assume that just means that my computer doesn't put out enough juice, but i would like to be certain. if that's not that pressing of an issue, the fact that the home button doesn't work anymore is. please help