drum unit for DX2500/MX2614/MX2640 (120000p) MX3114/MX3140 (135000p black/120000p color) MX3640 (150000p black/120000p color) MX2314 (100000p black/80000p color). drum unit for DX2500/MX2614/MX2640 (120000p) MX3114/MX3140 (135000p black/120000p color) MX3640 (150000p black/120000p color) MX2314 (100000p black/80000p color)