ThinkCentre A Series desktops are designed to help your business maximize its potential, enabling every employee to be as productive and efficient as possible. Small and medium sized businesses (SMBs) need PCs that will empower employees, often without the support of IT staff. ThinkCentre A Series desktops help employees set up, maintain, understand, and enhance their systems via ThinkVantage Technologies - your desktop's built-in help desk and sys-admin.