iMac

The iMac is a range of all-in-one Macintosh desktop computers designed and built by Apple Inc. ... The fifth major revision shared the same form as the previous model, but was thinner and used anodized aluminum and a glass panel over the entire front. The newest iMac uses a different display unit, omits the SuperDrive, and uses different production techniques from the older unibody versions. This allows it to be thinner at the edge than older models, with an edge thickness of 5.9mm (but the same maximum depth). It also includes a dual microphone setup, and includes SSD or HDD storage, or an Apple Fusion Drive, a hybrid of solid state and hard disk drives. The latest model was announced on October 23, 2012, with the 21.5" version released on November 30 and the 27" version released in December; these were refreshed on September 24, 2013, with new Haswell processors, faster graphics, faster and larger SSD options and 802.11ac WiFi cards. [iMac. Wikipedia]