How To Fix (PlayStation 4) PS4 Controller Flashing Blue
Wireless PS4 Controller, VIK Wireless Game Controller for Playstation 4, 750 mAh Dual Vibration Joystick Controller With 6-axis Gyro Sensor Touchpad LED Indicator for PS4 Console/Slim/Pro, Black - Walmart.com
How to Fix the Blue Light of Death on a PS4 - uBreakiFix Blog
PS4 hardware issues, and what you can do to resolve them - Polygon
PS5 Controller Flashing Blue Light | Fixed by Experts | PS4 Storage Expert