The thing I was most concerned about was when my printer starts the loading process it always says that what I’m using is genuine HP cartridges. When I replaced these cartridges in my printer that same message came up so I was happy about that. The next thing I found helpful was in my package of new cartridges was a return bag that gave me the opportunity to return the old spent cartridges for recycling. That was very useful. I’m back to printing again and pleased that all is working as expected. This was my first time to use this service and the free shipping was nice.