Lenovo' new ThinkPad T400s laptop is a thin-and-light notebook for business users that features solid state drive storage and falls between the featherweight ThinkPad X300 and its T400 predecessor. It sports a super-slim profile, just 0.83-in. thick at its thinnest point, and starts under 4 lbs. Read the original post: Lenovo debuts ThinkPad T400s business thin-and-light laptop; 0.83 in. thick, under 4 lbs.