Lenovo IdeaCentre A340 24IGM A340 22IGM Motherboard Mainboard UMA 5B20U53939
01LM725, 5B20U53939. Motherboard Mainboard Logicboard Board. J4005 UMA HDMI OUT NO DPK. This part is a genuine part direct from Lenovo so you can be sure you are receiving the highest quality product available.