A:Answer You need to check your manual or your all-in-one box. If you don't have those, you can probably find the specs for your AIO online. I use 56/57/58 cartridges for an HP psc 2175 AIO.
It's always good to check the cartridges before you buy a printer or AIO. Some have a cheap price, but they make it up on the ink. Some may cost a little more, but offer cartridges with more ink in them. Salespeople at electronic and office supply stores can help with this. They often know from customers' complaints which ink cartridges don't last long.