Lenovo Support Express - Parts List for Think Systems Released in 2012 (with Chief River chipset)
Family File Size Release Date Download Now Lenovo B430 Notebook 47 KB 12 Oct 2012 Lenovo B475e and B575e Notebook 188 KB 21 Feb 2013 Lenovo B480, B580, V480, V480c, V580 and B580c Notebook 235 KB 21 Feb 2013 Lenovo B490 and B590 Notebook...