McHenry County's Premier IT Services Company Backup Solutions - Utilizing Visual Safe, our Cloud Based Offsite Storage software our customers can store their data in unlimited size vaults. No file size restrictions at all, and you can set your own retention policy. Security Solutions - We can provide your organization with the best security practices. Our approach is comprehensive, our solutions increase security. Service & Repair - CSI is primarily a B2B company however we understand the needs of consumers as well. We offer in home and express drop off repair. We can service nearly any machines in or out of warranty. Why CSI ? McHenry county has trusted CSI for networking, service and repair, and all aspects of IT consulting for over 12 years. During this time we have supported and continue to support, Police Departments, City Halls, Lawyers, Contractors, Doctors, and even single owner home based businesses. No company is to large or to small, so please call today and ask for our references. We Service: We have clients in Crystal Lake • McHenry • Woodstock • Algonquin • Bull Valley • Cary • Fox River Grove • Harvard • Hebron • Huntley • Johnsburg • Lake in the Hills • Lakemoor • Lakewood • Marengo • Prairie Grove • Richmond • Ringwood • Spring Grove • Union • Wonder Lake • as well as many cities outside of McHenry County including Barrington • Chicago • Schaumburg • Dundee • Rockford • Hoffman Estates • Roselle • and many more.