Every A‑dec delivery system is designed with the same specialized attention to efficiency and reliability. From various integration capabilities to choice of mounting locations, we have a complete line of delivery solutions to fit your individual needs and budget. A‑dec 500: True integration. Unsurpassed ergonomics. A‑dec 500 provides you with internal integration of everything you need and ultimate comfort for you and your assistant. Choose rear-delivery, side delivery, or chair-mounted solutions.