รุ่นใดมีกราฟิก AGP และ 400 FSB (MHz)
Which model(s) has AGP graphics and 400 FSB (MHz)?
df = pd.DataFrame(columns=['model', 'graphics', 'fsb__mhz_'])
df[(df['graphics'] == 'agp') & (df['fsb__mhz_'] == '400')]['model']