Engadget - Is an all-in-one more your style? Looking to welcome a new one to the fold? If so, Maingear is looking to oblige. The PC maker has just added all-in-ones to its arsenal with the Solo 21. A 21.5-inch 1080p LED backlit display packs a 3.3GHz Intel Core i3, 4GB of RAM, and a 500GB HDD with 32GB of SSD caching out of the box.