Mobile workstations (select models). Available with Microsoft Windows XP. Starting at 4.5 lb2 with a 14.1" TFT. Long battery life up to 7.6hr6 (select models). Integrated Wi-Fi wireless10 (select models). Wi-Fi wireless upgradable (select models). Ultrabay Slim modular bay (select models). Select models available with Intel Centrino mobile technology.