The Lenovo part number 5B21K93198 (also sometimes listed as 5B21KI93198) represents a motherboard/system board for the Lenovo ThinkPad X1 Carbon 9th Gen and ThinkPad X1 Yoga 6th Gen laptops.
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Here are the key details regarding this component:
Processor: Intel Core i5-1135G7 Processor.
Memory: Integrated 8GB DDR4 SDRAM.
Compatibility: Strictly designed for the ThinkPad X1 Carbon Gen 9 and X1 Yoga Gen 6.
Condition: These are often listed on the secondary market as "new," "open box," or "pulled" from unused machines.
Other Details: Often includes On-Board Audio and Video Chipset, typically with TPM 2.0 (yTPM2) and Windows (yAB) compatibility.
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Note: As this is a core component, installing this motherboard generally requires transferring the CPU, memory, and BIOS data to a new unit.