Lenovo ThinkPad T430s 2353ABU 14 LED Notebook Intel Core i5-3230M 2.60 GHz 4GB DDR3 500GB HDD DVD-Writer NVIDIA NVS 5200M Windows 7 Professional Black The T430 meets eight rugged military-spec tests against extreme environmental variables, including temperature, pressure, dust, humidity The new precision island keyboard with improved ergonomic design and optional backlight is the best ThinkPad keyboard yet. Move data between the T430 and other devices quickly with USB 3.0  it's up to 10 times faster than previous USB technologies HD and HD+ display options deliver bright, crisp visuals on the T430  even when looked at from a wide angle