![90W Laptop Charger for Dell Latitude E6230 E6330 E6400 E6410 E6420 E6430 E6440 E6500 E6520 E6530 E6510 E7240 E7250 E7440 Inspiron N7110 N4010 N7010 N5110 N5010 DA90PE1-00 AC Adapter 7.4mm*5.0mm: Amazon.co.uk: Computers 90W Laptop Charger for Dell Latitude E6230 E6330 E6400 E6410 E6420 E6430 E6440 E6500 E6520 E6530 E6510 E7240 E7250 E7440 Inspiron N7110 N4010 N7010 N5110 N5010 DA90PE1-00 AC Adapter 7.4mm*5.0mm: Amazon.co.uk: Computers](https://m.media-amazon.com/images/I/71v7DnYrNmL.jpg)
90W Laptop Charger for Dell Latitude E6230 E6330 E6400 E6410 E6420 E6430 E6440 E6500 E6520 E6530 E6510 E7240 E7250 E7440 Inspiron N7110 N4010 N7010 N5110 N5010 DA90PE1-00 AC Adapter 7.4mm*5.0mm: Amazon.co.uk: Computers
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45W Ac Adapter Laptop Charger for Dell Inspiron 17 13 15 5000 3000 7000 Series 5559 5570 5567 5555 3583 3505 3584 3502 3793 5379 3493 7437 XPS Vostro P92G P88G Latitude 3510 3410 Computer Power Cord: Amazon.co.uk: Computers & Accessories
![What's the purpose of this bulky cylindrical part near the plug end of a laptop charger cord? - Electrical Engineering Stack Exchange What's the purpose of this bulky cylindrical part near the plug end of a laptop charger cord? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/OKTfj.jpg)