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Memory RAM | 4GB - Lenovo ThinkPad T420 T-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V
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Memory RAM | 4GB - Lenovo ThinkPad T420 T-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V
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Notebooks - What's this slot on T420 | bit-tech.net Forums
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Lenovo ThinkPad T420 review: Lenovo ThinkPad T420 - CNET
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8GB kit (2x4GB) for Lenovo ThinkPad L420, L421, L520, T420 Ram Memory | eBay
Lenovo ThinkPad T420s RAM Replacement - iFixit Repair Guide
