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Lenovo Flex 4-1580 bios
Flex 4-1580 Laptop (Lenovo),ideapad 510S-14IKB, 310S-14IKB, 310S-15IKB, Yoga 510-14IKB, Yoga 510-15IKB, Flex 4-1480, Flex 4-1580, EC_128KB & Main_8MB