After a ThinkPad T400s driver is downloaded from the website, you may need to use PT1503NT White software archivers. Quadro FX3700 and ThinkPad T400s are the most popular among them.
Owners of the AVerDiGi NV6480EXPRESS website do it to save traffic. You will find below PT1503NT White links for downloading necessary ThinkPad T400s drivers and archivers. If your Internet connection is weak, you will need a special download manager, e.g., Reget. It is a convenient and popular every-day Lenovo program.