Business users looking for a thin, light but also powerful notebook may have a solution in the form of Lenovo's ThinkPad T400s - a middle ground between the eminently portable X300 and larger, more capable machines.
Ostensibly a slimmed down T400, the T400s features the same 14.1in screen size that's LED-backlit with a 1,440 x 900 pixel resolution. Inside a 2.53GHz Core 2 Duo CPU can be paired with either a 128GB SSD or 250GB hard drive and Lenovo has found space for a slim (9.5mm) DVD drive, optionally upgradeable to a Blu-ray unit.
The usual ThinkPad robustness should be present despite chassis size being reduced from 1.1-1.3in thick to 0.83in, a notable decrease and the T400s managing to be almost 20 per cent lighter than the T400 at "just under four pounds" (about 1.8kg). Lenovo says it has tweaked its keyboard design optimising commonly used buttons and tightening the gaps between keys, improving their crumb resistance. Battery life is claimed at nearly six hours, which if accurate isn't too bad at all.
Ethernet Wi-Fi and WWAN connectivity is present, with WiMAX optional in those areas where it's actually of any use - Moscow, Milton Keynes and a few cities in the US last time I checked. A 5-in-1 card reader or a 34mm ExpressCard Slot are available and both DisplayPort and VGA outputs are provided alongside ample USB ports; one of which also offers eSATA.
This combination of portability, ruggedness and power doesn't come cheap, surprisingly. The T400s will start from £1,760 ex VAT which is hardly insignificant - but hey, it's a ThinkPad, right?