First the good, item was received in fair time with good packing, although I did not care for the way the mouse was thrown in with the power cord rolling around and not wrapped so its not banging up against pc. I give the packing a 4 out of 5.Also I am a computer professional with 30+years of experience in sales, consulting, hardware /software.So many things were wrong out of the box, that I didn't bother turning it on because at this point it did no event matter, I just re-boxed it and started a return.The Bad: The sales page does not live up to the hype, item was dirty inside, not as described, and missing parts.1. Missing Optical drive, I wanted the optical drive internal so I would not have to use a external DVD.2. Once I took out the computer, I wrinkled my nose and wondered what was that funky, fishy, Smokey smell, but I knew from experience, what it was; years of funk gathered on the fans, heatsinks, power supply etc. When re-selling a used PC, it is critical to clean the fans and heatsinks, and use vacuum, air+cleaner that removes those disgusting years of accumulated of smells.3. Upon closer inspection I noticed the part number sticker on one of the RAM chips and of course as a professional I decided to see what the configuration was (listed as 16GB of RAM, had 2 sticks present so should be 2 x 8GB) After looking up the part number off the sticker, The RAM was ECC per web references, its supposed to be Non-ECC per the mfg HP ( manual says not to use ECC in these systems). This is not saying it per se may not work, but HP says not to use it. No need to boot this up and hassle with potential errors and blue screens, or other erratic PC behavior on top of all the other stuff.As a professional I can see that these items are received from sources, checked quickly and flipped. It takes time to properly clean inside a computer and the first signs to check for are dust, funky, stale smells on the fans, exhaust, PSU, CPU, GC.I vacuum, dust and clean my own PC workstations 2x a year so I know how tedious and long it takes.They could have at least brush/vacuumed the fans, PSU, and heatsinks and sprayed electronics parts cleaning spray to remove the gunk and smells, that's real professional re-furbishing.If I had turned this on, that funky old fishy smell coming from this PC would have been all over the house from the fans; and that's disgusting.