The Precision M6800 is Dell's biggest and most powerful business notebook, which means a high price ? this £2,075 (around US$3,490, AU$3,750) machine is twice as pricey as some of its rivals. That's expensive, but Dell has packed this laptop with every feature a professional will need on the road.Every aspect of the M6800's design speaks to its business credentials. The chassis is built from aluminium and magnesium alloy, and build quality is top-notch: there's no give on any surface. Dell has also tested this machine using MIL-STD-810G protocols, so it's resistant to dust and works in extreme temperatures.It's versatile, too. There are four USB 3.0 ports, D-SUB, HDMI and DisplayPort outputs, two audio jacks, an Ethernet socket and an SDXC card slot, and it's also got rarer additions: ExpressCard, eSATA and Smart Card slots, a docking station connector, a hot-swappable hard disk and a physical Wi-Fi switch.Dell has kitted this machine out with a traditional keyboard rather than a Scrabble-tile unit. It's a sensible decision, and it boasts an excellent layout, plenty of travel on each key, and a reliable, comfortable action thanks to the high quality feel and rock-solid base.It's a pleasure to use, and the trackpad is good ? a tad small, but accurate and with clicky buttons. This is a work laptop, so it also has a trackpoint in the middle of the keyboard with three discrete buttons.Touches of detailLittle touches impress. The lid is held in place by an old-school clasp, there are numerous status lights, and the keyboard's backlit.