The Lenovo Active Protection System (APS) is a software and hardware feature designed to protect your hard drive (HDD) or solid-state drive (SSD) from damage due to physical shocks or drops. It is typically found in Lenovo laptops and uses an accelerometer or motion sensor to detect sudden movements (such as dropping or jarring) and automatically parks the hard drive's read/write heads to prevent data loss or damage to the disk.
The Lenovo Active Protection System Driver