After streaming a video for 15 minutes, the touchpad measured a cool 81 degrees, the keyboard a chilly 84 degrees and the underside a breezy 88 degrees Fahrenheit. Unlike the T431s, which had a warm right palmrest that made typing uncomfortable, the ThinkPad T440s stayed pleasantly cool throughout our testing. MORE: How to Upgrade the RAM on the ThinkPad T440s Like other ThinkPads, the T440s features dual-array microphones for better conferencing, while Lenovo's settings app allows you to set the mics to pick up a single voice or many at once. The HD webcam is capable of capturing solid images even in a shadowy area of our office, but even pictures we took of our face in a very bright conference room suffered from a bit of visual noise. The left side houses a SmartCard reader, a DisplayPort and two more USB 3.0 ports. On its right side, the ThinkPad T440s has a headphone jack, a SIM card slot for optional mobile broadband, a 4-in-1 memory card reader, a Kensington lock slot, a USB 3.0 port and a VGA port that provides the best way to connect to older projectors and the large number of monitors that don't have DisplayPort. The ThinkPad T440s' 0.8-inch thick chassis leaves room for several important ports that many other Ultrabooks - including Lenovo's own X1 Carbon - omit. Multitouch gestures, such as pinch-to-zoom, rotate, swipe in from right for charms, swipe in from left to switch apps and four-finger swipe to minimize all apps, worked smoothly. Despite its smooth surface, we were able to move around without our finger slipping and without a hint of the jumpiness that we've experienced on many other buttonless touchpads. The large, 3.9 x 2.75-inch buttonless touchpad provided accurate navigation around the desktop. The notebook offers a backlit keyboard with very strong tactile feedback, great key spacing and a slightly curved key shape that makes it easy to avoid adjacent letter errors.
Lenovo ThinkPads have long set the gold standard for typing comfort, and the T440s more than lives up to this tradition. The sound became hollow and lifeless when we turned this feature off. Enabled by default, the included Dolby v4 audio software made the audio quality more tolerable than it would have been without it.
Judas Priest's guitar-heavy "Painkiller" sounded tinny. When we played Patrice Rushen's bass-laden "Forget Me Nots," playback was fairly accurate, though flat. Playback also muffled a bit when the system was pressed against our legs.
The laptop's bottom-mounted speakers were loud enough to fill a small room, measuring 81 decibels on our sound test, which is fairly loud, but still a tad below the 84-dB category average. While it's fine for conferencing and movie watching, the ThinkPad T440s offers unpleasant music playback.
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