Quadra IT Pty Ltd - Adelaide, SA - HP Registered Reseller - Lenovo Business Partner - Computer Syste, Quadra IT Pty Ltd, Adelaide, South Australia provides the complete service. Lenovo Business Partner, Computers, Servers, Internet and Security Solutions. We provide a local, personal computer service for home and business users. Using dedicated servers we also provide email, Hosted Exchange, web hosting, web design and maintenance.