Model: ThinkPad X1 Carbon 5th Gen. 8GB onboard DDR4 RAM 2133MHz. RAM: 8GB (onboard) DDR4 2133MHz. Model LENOVO/THINKPAD X1 CARBON 5TH GEN. The COA (Certificate of Authenticity) sticker is located on the unit and has the Product Key needed to be able to load that OS on your unit.
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