After-sales Service: Providing 30-day returned and money back service, or choose free exchange service. Tip adapter cable for hp / dell are CE/FCC/Rohs certificated,3 times strictly tested to make sure it works for the laptops. If you have any question, please contact us in time and we will reply within 24 hours. Output male tip 7.4*5.0mm: Suitable for HP dv4 dv5 dv6 dv7,zbook 15 17 G1 G2, for HP EliteBook 850 G2, 750 G2, 850 G1, 750 G1, for HP ZBook 15u G2, 14 G2 Mobile Workstation HP EliteBook 840 G2 Notebook PC HP EliteBook 740 G2 Notebook PC HP EliteBook 740 G1 Notebook PC HP EliteBook 840 G1 Notebook PC HP ZBook 14 Mobile Workstation HP EliteBook 820 G2. 4.5*3.0mm female input tip compatibility: Fit for Dell Inspiron 13 5000 Series-5370, 14 5000 Series-5488, 14 5000 Series 2in1-5482 14 5000 Series-5480, Inspiron 15-7572, Inspiron 14 3000 Series-3480, Inspiron 15 3000 Series-3583, Inspiron 15 5000 Series-5580, Inspiron 15 7000 Series-7580 15 7000 Series-7570, Inspiron 14 7000 Series-7472, Latitude 3490 Vostro 3480 3583 5370 5471 5481 5568 5581, Inspiron 22 3000 Series AIO-3277 Ins. Output tip 7.4*5.0mm: Fit for Dell Inspiron 15R 5537 17R 5720 17R N7110, Inspiron 3137 3441 3442 3443 3537 3541 3542 3543 5442 5445 5447 5448 5457 5542 5543 5545 5547 5548 5557 5748 5749 7547 7548 M411R M431R 5435 Latitude 3350 3450 3460 3470, part number: HA65NM130 DA65NM130 HK65NM130 LA65NM130 06TFFF 03F1CN 0NVV12 0JNKWD 0FPC2Y 0G4X7T. The dongle tip adapter cable can work for Dell & Hp Laptops,Using this cable, you can use your new laptop adapters ( Dell or HP) with 4.5mm tip to work for your old laptops which using 7.4mm*5.0mm tip adapters (Please make sure they are same brand and the power is same, for example: you could not using this cable to work for your 65w laptops with a 45w charger ).