Acer Revo Build M1-601 Mini Desktop with 1000GB. Intel Celeron, 4GB, 32GB eMMC + 1000GB HDD, HDMI, Display Port, USB 3.0 x 2, Ethernet (RJ-45) Port, SD Card Reader, Wireless Keyboard and Mouse, Windows 10 Home. Includes USB optical mouse and keyboard. Revo Build Series (M1-601) Mini PC takes a modular approach to allow consumers to customize their computer without opening up the chassis. ?Blocks? with different features can be easily stacked on top of the base unit, which makes adding functionality as easy as playing with toy blocks. The ?Blocks? are connected through pogo pins with magnetic alignment so that there?s no hassle with wires when swapping out modules. The Blocks can also work independently or with other PCs. The Revo Build M1-601 desktop is packaged in a tiny 1 liter chassis with a 125 x 125 mm footprint that takes up minimal space and can be placed almost anywhere.