Lenovo ThinBook 14 G4 or 15 G4 Specs & Overview Lenovo ThinBook 14 G4 or 15 G4 Specs & Overview By Kate Rine on May 14, 2022 The Lenovo ThinBook 14 G4 and Lenovo ThinBook 15 G4 are new thin and light 14 and 15-inch laptops with a screen up to Full…