http://www.dell.com/support/home/us/en/04/product- support/product/inspiron-17r-5721/drivers
treba podla servis tag-u skontrolovat, ci je to presne ten model
http://www.dell.com/support/home/us/en/04/product- support/product/inspiron-17r-5721/drivers
treba podla servis tag-u skontrolovat, ci je to presne ten model