A 4GB SK Hynix DDR4 RAM module, specifically model HMA451U6AFR8N-TF. Key details include:
Type: DDR4 SDRAM
Capacity: 4GB
Speed: 2133MHz (PC4-2133P)
Form Factor: SO-DIMM (for laptops)
Pins: 260
Voltage: 1.2V
Timings: CL17
Use: Enhances laptop performance by providing temporary data storage for quick access.