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CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad W540 20Bhxxx; 20GBxxx Series - A7
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Lenovo ThinkPad W540 15.6" Mobile Workstation with Core i7-4700MQ 2.40GHz Quad Core Processor, 16GB Memory, 256GB SSD, NVIDIA Quadro K2100M, and Windows 10 Professional (Used) - Walmart.com
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Refurbished: Lenovo ThinkPad W540 Workstation 15.6" Full HD 1920 x 1080 Resolution Laptop - Intel Quad Core i7-4800MQ 32GB RAM 256 GB SSD + 1TB HDD WebCam WiFI DVDRW Windows 10 Professional 64bit - Newegg.com
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