The Apple iMac 27-Inch Desktop, 3.4 GHz Intel Core i7 Processor, 16 GB memory, 1TB HDD (Renewed) is a great product and works perfectly. When I first got the product it would not work with the supplied keyboard & mouse.  There was another keyboard and mouse that the vendor supplied and that would not connect either.  If I did not have an Apple iMac keyboard from a 2003 and 2013 iMac. I would have to have returned the purchased iMac. I contacted the vendor and went around and around for a month before I just received refund for a keyboard & mouse and I have to use the keyboard from my 2013 iMac.I had initial hard drive issues when trying to install Apple updated software but that was resolved. It’s assumed that the product shipped was not tested with the keyboard & mouse provided. When inquiring why an Apple keyboard & mouse were not provided with the 27” iMac shipped to me the vendor stated that, “ All amazon apple renewed listings state in bullet points and descriptions that the accessories will be generic. ”.