This is the second computer I've purchased from SKYTECH USA in just over a year. They really are an incredible value for the upgrades that SKYTECH builds them with.  I bought a -Dell Optiplex 7010 Business Desktop Computer (Intel Quad Core i5-3470 3.2GHz, 16GB RAM, 1T SSD, USB 3.0, DVDRW, Windows 10 Professional) (Renewed)- and it is absolutely the fastest machine I've used! I'm not a gamer, & I haven't had any issues so I have had no reason to reach out for support from them. The instructions they provide are very easily followed, & provide different contact info if needed to reach out to them for support. This computer was even easier to install than my first one, as there was no product code to enter, as soon as an internet connection was detected, it automatically registers itself with Microsoft!  Again, the first computer I purchased last October (2019) has performed so well, that I wanted to be sure the next one I got was from SKYTECH. They offer a warranty, 1 to 2 yrs, beyond the Amazon standard of renewed products-90 days- so you have plenty of time to see if any issues pop up. I waited 2 months to review this one, and I'm just as satisfied today as I was the first day. I spent a lot of research of who to buy 'renewed' products from, and SKYTECH USA has gone beyond my expectations! I have 1 more DELL dual core to replace, and I will buy from them as well.