Integrated Intel HD 4400/4600 or Discrete NVIDIA GeForce 820M 1x SATA 3.0 (6Gb/s) and often 1x mSATA slot Common Failure Points for Repair
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However, there is from major brands (ASUS, Gigabyte, MSI, etc.). It may be: Integrated Intel HD 4400/4600 or Discrete NVIDIA GeForce