L20C4P71, SB10T83217, 5B10W13974, L20D4P71, SB10T83218, 5B10W13975, L20L4P71, SB10T83215, 5B10W13972, L20M4P71, SB10T83216, 5B10W13973. Lenovo ThinkPad X1 Carbon 9th Gen (X1 Carbon 2021) Series. Lenovo ThinkPad X1 Yoga 6th Gen (X1 Yoga 2021) Series.
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