Finally my old Lenovo G50-70 notebook working 95% perfect with latest Catalina with external monitor /i3-4030U, Intel HD Graphics 4400, 4 GB DDR3 RAM, 128 GB SSD/ : r/hackintosh
Lenovo G50-70 Memory RAM
HOW TO UPGRADE RAM OF YOUR LENOVO G50-70 AND G50-80 LAPTOP IN HINDI - YouTube
DOMANDA - Upgrade RAM Lenovo G50/70 | Tom's Hardware Forum Italia