Hardware Maintenance To get the most out of computer technology, systems require effective, ongoing maintenance by a support organization well versed in the intricacies of computer systems hardware and software. Installation and Moves As your business grows and changes, your computer environment becomes more dynamic, creating the need to have an experienced partner to assist you with the installation, move, add, and change (IMAC) of your computer equipment. Procurement Services Key Systems is a leading re-seller and authorized service provider for all major PC manufacturers.