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ThinkPad T420 Memory Replacement

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  • ThinkPad T420 Battery Replacement
  • ThinkPad T420 Keyboard Replacement
  • ThinkPad T420 RAM slot - Bottom Replacement
  • ThinkPad T420 RAM - Keyboard Replacement
  • 1 × Pro Tech Go Toolkit—The bits in the EET will suffice for this guide, but the additional tools could be useful in future repairs.
  • 1 × Essential Electronics Toolkit—Limited bit set, but contains all bits needed to service this laptop.
  • 1 × FixMat—Optional - Not required, but suggested for screw management.
  • 1 × 8GB PC3L-1600 (2x 4GB pair), EOL per Crucial; retained for research purposes.—Standard 1.5V memory. Guaranteed to work.
  • 1 × 16GB PC3L-1600 (2x8GB)—While this is is DDR3L memory, it is backwards compatible with 1.5V compatible systems.
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