Placa madre 01LX699 para portátil Lenovo Thinkpad X280 20KF 20KE EX280 i7-8550U 8G
Due to transportation safety, CMOS battery cannot be installed normally. For Lenovo:FRU:XXXXXXX or 5BXXXXXXXX. In order to avoid buying the wrong, leading to compatible processors. How to find the exact motherboard.