Additional Details ------------------------------ Bullet point: AC CHARGING FOR QUICK TURNAROUND: Locking enclosure provides AC charging for up to 10 tablets, laptops and e-readers, up to 10.5 inches. The devices are protected by 2,880 joules of surge suppression and EMI/RFI noise filtering that protect against potentially harmful bursts in voltage. Charging station is recommended for education, office, commercial, retail, industrial and healthcare environments.