New Genuine Dell Docking D3100 Station 19.6V 3.4A 65W Power Adapter Compatible P/N 43NY4 MGJN9 G6J41 will fit only pin size 4.5mm x 3.0mm (This listing is for a 65w Power Supply
Snapklik.com : 65W AC Adapter For Dell Ultra HD/4K Triple Display Docking Station D3100 D1000 5M48M 452-BBPG 5RR7X Replacement Dell Docking Station Power Supply (UL Listed
Dell D3100 Docking Station with 65W Power Supply,USB3 Cable and DVI-HDMI Adapter (Refurbished)
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Zell 65W Ac Adapter Fit For Dell Docking Station D3100 D1000 5M48M 452-Bbpg 5Rr7X Charger Power Supply Cord - Newegg.com
Jason Walker on X: "Here's a Dell D3100 dock that was exhibiting no signs of life/power. Real nice soldering job there @dell. Sure you don't want to add some more solder? Gnd
Buy UpBright 19.5V 3.34A 65W AC Adapter for Dell Docking Station D3100 D 3100 Displaylink 4k Inspiron 14 5000 14-5455 I5455 15455 14-5451 I5451 15451 7000 7437 14-7437 i7437 i7437T Laptop Power
Adapter Charger for Dell Docking Station D3100 Displaylink 4k PSU R6WD9 Power BL | eBay
Dell D3100 Docking Station Laptop AC Adapter Power Supply