Lenovo ThinkPad X1 Carbon Series: X1 Carbon Gen 2 (Type 20A7, 20A8), X1 Carbon Gen 3 (Type 20BS, 20BT), X1 Carbon Gen 4 (Type 20FB, 20FC), X1 Carbon Gen 5 (Type 20HR, 20HQ), X1 Carbon Gen 6 (Type 20KG, 20KH), X1 Carbon Gen 7 (Type 20QD, 20QE), X1 Carbon Gen 8 (Type 20U9, 20UA).
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