ชิปเซ็ตประเภทใดในรุ่น Precision t3400 พร้อมด้วยกราฟิก PCI Express?
What type of chipset is in the Precision t3400 model with the PCI Express graphics?
df = pd.DataFrame(columns=['chipset', 'graphics', 'model'])
df[(df['graphics'] == 'pci express') & (df['model'] == 'precision t3400')]['chipset']