I love how clean and un-blemished this Dell unit was. With a very fast I7 processor, plenty of RAM and a hair under a terabyte of SSD hard drive space. I mainly wanted a computer that ran the Edge browser efficiently. I don't have to wait forever for the browser or anything else to load, all programs snap to the screen. The process to register the computer was fairly painless and final OS installation happened on initial boot up! I'm a stickler for good packaging and this unit was well packaged in a molded foam form within a shipping box. I initially had no need to test or use the optical drive but when I did a couple of weeks later it worked intermittently and would stop while reading a disk and required using a paper clip to manually eject any optical disk in the drive. There was a 2 sided instruction sheet in the box with a number to call NT, the refurbisher which I did. I explained the problem and NT or Nakshatra Tech, the refurbisher sent out a replacement drive and said to call when it arrived and they would walk me through the change over, however, I had downloaded the unit manual and have prior computer experience and did the change over in 12 minutes and the replacement Optical drive works the way it should. The only other issue was the WIFI dongle that came with the unit kept failing and would not stay connected to the internet so I used 1 off another computer and ordered a replacement off of Amazon, Bottom line is Dell computers are great machines and I'm happy to get a refurbished one. A lot of computers no longer come with an optical drive which is another reason i bought this one. A lot of people have a ton of Optical disks ( CD's DVD's RW's ) and no way to use them so these updated refurbished computers are a good deal IMO.