Over the years, Dell Inc. has broadened its product line to include not only desktop and laptop (listed under mobility) computers, but also servers, storage systems, printers, software, peripherals, and services, such as infrastructure services. By 2010, net revenue by product line was composed of desktop PCs (25%), mobility (31%), software and peripherals (18%), servers and networking (11%), services (11%), and storage (4%). Desktop PCs’ net revenue dropped from 38% in 2006, with each of the other product lines (especially mobility) increasing as a percentage of total revenue. Although the 2010 gross margin for all Dell products was only 14.1% of sales, due to a lower average selling price, the gross margin for services, including software, was a much fatter 33.7%.