Just finished setting up my new iMac but can't get my printer to work. It says I need to install software but I'm not having any luck finding it. HP's site has software for Snow Leopard but I'm not seeing it for Sierra. I did find it on one site but I'm not sure if it's legit/safe (http://mac.thetutorialfree.com/2016...0-yosemite-10-9-mavericks-10-8-mountain-lion/). Any suggestions on where I can safely download software for this? Thanks!