The Dell Precision M4800 is a powerhouse. Claimed by Dell to be the world's most powerful 15-inch mobile workstation, it packs enough hardware to allow for desktop-like performance. Although Dell has recently launched a mobile workstation that comes in a thin chassis, the Dell Precision M3800, the Dell Precision M4800 is more in keeping with the traditional appearance of the Precision line. It doesn't try to be thin or light but instead has a solid, tank-like chassis that's 40 mm thick and weighs 2.9 KG. You could squeeze two or three entire Ultrabooks into the same space.The Dell Precision M4800 is coated in Dell's signature gunmetal dark grey case. It's a look that screams professional use more than fun and games - whip out the thick-and-heavy M4800 on a train, complete with its array of flashing status lights and expansion ports, instead of a small device like a tablet, and your fellow commuters will undoubtedly imagine you're very serious about computing.No corners have been cut to reduce the Dell Precision M4800's physical size. A total of 11 status LEDs flicker on and off. There's a built-in optical drive, smart card reader, SD card reader, four USB 3 ports, with a further E-Sata/USB 2 port at the rear. There's also DisplayPort and HDMI rounded off by Gigabit ethernet as well. Dell has sensibly retained the analogue D-Sub connector, since the majority of displays and projectors in office environments still use this video standard.Dell avoids the isolated-style keyboard, using a more traditional keyboard style.