203021-1 For Lenovo Ideapad Flex 5-14ALC05 Motherboard R5-5500U 16GB 5B21B84990
For Lenovo: FRU: 5B20SXXXXX/5B21BXXXXX. A:We promise that it can be compatible perfectly if you provide the correct information of Motherboard,such as the laptop model and the part number of Motherboard.