Used SR2F0 I5-6300U BGA Chipset with balls tested 100% working | eBay
SR2F0 - Dell System Board (Motherboard) Core i5 2.4GHz (i5-6300U) W/CPU Latitude 12 (E7270)
Amazon.com: CN-0H7Y7K H7Y7K 0H7Y7K Mainboard for DELL 7270 E7270 Laptop Motherboard AAZ50 LA-C451P with SR2F0 I5-6300U CPU DDR4 100% Tested OK : Electronics
Amazon.com: lilili Notebook Mainboard Fit for Thinkpad T460 UMA Laptop Motherboard 01AW336 BT462 NM-A581 SR2F0 CPU I5-6300U Solid State Motherboard : Electronics