Compatible with Dell laptops (the port size is 4.5*3mm): Dell Inspiron 11 3000 Series: 3147 3148 3152 3153 3157 3162 3168 3179; Dell Inspiron 13 5000 7000 Series: 5368 5378 7347 7348 7352 7353 7359 7368 7378; Dell Inspiron 14 3000 5000 7000 Series: 3451 3452 3458 3459 3462 3467 5451 5452 5455 5458 7437 7460; Dell In spiron 15 3000 5000 7000 Series: 3551 3552 3558 3565 3567 5538 5551 5555 5558 5559 5565 5567 5568 5578 5567 579 7 558 7568 7569 7579; Dell Inspiron 17 5000 7000 Series: 5755 5758 5759 5765 5767 5770 7778 7779; Dell Latitude 13 3000 7000 Series: 3379 2-in-1 3390 2-in-1 7350 2-in-1 7370; Dell Latitude 14 3000 5000 Series: 3400 3410 3490 5480 5488; Dell Latitude 15 3000 Series: 3500 3510 3590; Dell Vostro 14 15 Series: 3458 3459 5459 5468 3558 3559 5568; Dell XPS 11 12 13 Series: 9P33 L221X 9Q23 9Q33 9Q34 L321X 9333 9343 9344 9350 9360 9370 9365 2-in-1 9350 9550; Dell Optiplex Series: 3020 7040 9020 3046; Compatible with Dell laptops (the connector size is 7.4*5mm): Dell Latitude 6420 5580 5480 7480 7280 3330 3340 3440 3550 3450 3540 3350 3189 5590 5490 7490 7290 5300 5400 0 5500 0 7300 7400 3570 3150 3160 3180 3190 3300 3460 5404 3470 3480 3488 3560 3580 3588 5280 5414 5499 5 721 4 7380 7404 7414 6430U Dell Latitude E4300 E4310 E5220 E5250 E5270 E5400 E5410 E5420 E5430 E5440 E5450 E5470 E5520 E5530 E5540 E5555 22 E5 570 E6230 E6320 E6330 E6400 E6410 E6420 E6430 E6510 E6520 E6530 E7240 E7270 E7350 E7440 E7450. 7470 E6540 E6440 E7250