The T400s sports the traditional black exterior which exudes a serious, no-nonsense feel. Not to mention, the color would easily masked out any visible dirt from sight. Its 14.1-inch WXGA display supports up to 1440×900 pixel resolution and is non-reflective due to the absence of the tempered glass. (Some users prefer such display to the reflective type).
Below the screen are the full-size keyboard with large palm rests which combined to provide comfort for users to type on even after long hours. Lenovo has included both the pointing stick in addition to the touchpad for long-time ThinkPad users who are more accustomed to the pointing stick. Unlike the smooth and flat touchpad of most laptops, this one has more texture to give a better feel. On the right palm rest is a fingerprint reader for additional security.
Above the display is the 2-megapixel camera and a tiny LED light (known as ThinkLight) for illuminating the keyboard area so that user can see when they type during flight or under ambient lighting conditions. Neat.
On the left are the air vent, USB, headphone jack and a 5-in-1 card reader that supports most standard memory cards.
The manual wireless switch, 9.5mm slim DVD multi-drive and kensington lock hole are on the right.
At the rear holds the power connector, VGA out, RJ-45, powered USB2.0, eSATA/USB2.0 combo, display port and air vent.
Flipping the T400s upside-down and removing the base panel revealed a 2GB hynix DDR3 memory, Ericsson Mobile Broadband Minicard modem and Intel Wi-Fi wireless module. Our review unit also comes with 6-cell 11.1V 3.9Ah Lithium-ion battery.
Inside the battery compartment is a SIM card slot (optional) for users who have a 3.5G HSDPA mobile broadband plan.
According to the maker, the ThinkPad T400s incorporates an improved top cover “roll cage” design which was earlier introduced to the ThinkPad X300. This means that there is more protection to the laptop, yet keeping its thin and light form factor.