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I have a Lenovo Thinkpad T420 Core i5 2520M. What is the maximum memory I can have - 8 GB or 16 GB? - Quora
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Lenovo ThinkPad T420s LCD Replacement - iFixit Repair Guide
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ThinkPad T420 Memory Replacement - iFixit Repair Guide
Memory RAM | 4GB - Lenovo ThinkPad T420s T-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V
ThinkPad T420 Memory Replacement - iFixit Repair Guide
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Lenovo ThinkPad T420s RAM Replacement - iFixit Repair Guide
Certified Refurbished Lenovo Thinkpad T420s/T420 I5-2nd Gen 4GB Ram 500GB HDD 1 year warranty - ReTechie
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Arch Memory 4GB 204-Pin DDR3 1333 MHz So-dimm RAM for Lenovo ThinkPad T420s 4171-6ZU at Amazon.com
Lenovo ThinkPad T420s RAM Replacement - iFixit Repair Guide
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