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Some versions of macOS (such as OS X Lion) display a black screen of death instead of a kernel panic in the event of a hardware or software failure. This is usually pointed to a graphics card failure or a sleep/wake issue. [9]
The screen resolution is either 1366×768 or 1920×1080. The NVIDIA graphics card used in Dell 15 (L501x) turns off or on automatically for specific applications demanding dedicated graphics. It has integrated JBL 2.1 Speakers + Waves MaxxAudio enhancement. It is equipped with a 2 MP webcam. It has two USB 3.0 ports and one eSATAp port.