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Memory RAM | 16GB Kit (2x8GB) - Lenovo ThinkPad X220 Tablet X-Series - (OEM-# Dual-Channel Memory Kit (2x 03X6401)) - 1333MHz, Unbuffered, 1,5V
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CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad X220 4287, 4290, 4291 Ddr3-1333 - A13 at Amazon.com
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Memory RAM | 8GB - Lenovo ThinkPad X220 Tablet X-Series - (OEM-# 03X6401) - 1333MHz, Unbuffered, 1,5V
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Memory RAM | 2GB - Lenovo ThinkPad X220 X-Series - (OEM-# 55Y3710, 55Y3716, 78Y7392, 64Y6651) - 1333MHz, Unbuffered, 1,5V
Upgrade RAM in a ThinkPad X220 - Dodoid's Idiot Proof Guides - YouTube
Lenovo Thinkpad X220 - iFixit
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Arch Memory 4GB 204-Pin DDR3 1333 MHz So-dimm RAM for Lenovo ThinkPad X220 Tablet 4296-37U at Amazon.com
8GB (1X8GB) Memory Ram Compatible with Lenovo Thinkpad X220 4298 Tablet By CMS A14 - Computer Memory Solutions
A-Tech 16GB (2 x 8GB) RAM for Lenovo THINKPAD X220 4294 | DDR3 1600MHz SODIMM PC3-12800 204-Pin Non-ECC Memory Upgrade Kit at Amazon.com
Lenovo ThinkPad X220 Upgrade Guide - StorageReview.com
OFFTEK 4GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad X220 (DDR3-12800) Laptop Memory at Amazon.com
