SinLoon PD 100W DC 7.4mm x 5.0mm Female(7.4 x 0.6mm) Input to USB Type C Male Power Charging Cable, 100W DC7450 to Type C Cable with PD Automatic Identification Chip,for Phones,Tablets,Laptops(Blue)

It seems to work on Dell Latitude 5440. I tried with a 120W Dell power supply, a 130W Dell power supply, and even a real old 65W Dell power supply. The literature says you should not use it with anything less than a 100W power supply but it seems to be working (although it may eventually overheat the 65W). All Dell power bricks source 19.5 regardless of the Power rating of the brick. The USB C Dell Brick that came with the latitude says it is a 100W with a 20V source.So i doubt this little dongle thing is actually stepping up the voltage from 19.5 to 20V but i guess it is close enough to charge the laptop.I am a little surprised it is not even giving a warning about a "weak charger detected, charging will be at a reduced rate". There must be a spoofing chip that is still forcing the fast charge. Honestly i would rather it went slow charge but i tested by going for 90% charge to 97% charge in 7min and neither the 65W dell brick nor the dongle adapter got hot. The brick was slightly above room temp warm.

I use this coupled with my old Dell AC power supply and a PWR+ car charger to dc barrel jack adapter so that I can charge my USB-C PD devices. I can't measure its output, but the PWR is rated to output 19v, 90W and with this adapter was able to sustain an Asus H7604 laptop while editing video; the laptop can take up to 120W over Thunderbolt 4/USB-C PD or 240W over its dc jack. I've also used this to super fast charge a Samsung S21 or charge a Dewalt 20v battery from my car via the DCB094K charger.

Stopped working after a few seconds.

Our IT department currently services a mixed fleet of "barrel" and USB Type-C adapters. Prior to purchasing these adapters, we faced a pile of returned barrel units returned from decommissioned laptops. Now that we have these well-made power dongles, we can reuse the old adapters with new laptops and provide our users with the option to have one AC adapter for home and one for work. They are a big cost saver. Only one caveat, assure free airflow around the device - some combinations of AC "brick" (converter) and laptop can cause the device to become noticeably warm.

Look carefully at the specs of USB-C PD dongles. Most of them on Amazon currently only deliver a maximum of 65 W. Currently, this dongle appears to be the only product on Amazon that can convert a Dell charger with the 7.4 mm barrel into a modern USB-C PD charger that delivers up to 100 W. The two laptops in our home will not charge if they get less than 90 W. They came with 130 W and 200 W USB-C power bricks that I don't want to carry around. Thanks to this dongle, I can reuse my old Dell power bricks and keep them where I use my computers. Yay!I am using a 90 W and 180 W power bricks with this. In all cases, Windows alerts me that my power delivery is "slow charging" because it is not the original charger. I expected that. So far, it's fine. Maybe if I ran a power hungry game I'd need the original charger, but this solution keeps my battery at 100% for everything I do for work and for watching videos. I Recommend this.

Tried to use this adapter to charge a newer Dell laptop that only has a USB-C connection from an old Dell 19.5VDC / 12.3A power supply. Did not work. USB tester indicated 0.0A so this was DOA. Guess I should have purchased an actual unit from Dell.UPDATE: Returned the failed (presumed) adapter for a replacement to give it another try. The replacement adapter gave the same results of not charging the Dell laptop. After re-reading the product description on Amazon, and the note on the adapter that reads "Input must be > - Output" was it realized it was user error. Measuring the voltage on the power supply that came with the laptop read 20 Volts. Measuring the voltage on the old Dell power supply read 19.5 Volts. A 19.5 volt power supply is not going to charge a laptop that requires 20 volts. Tested the adapter with the 19.5 volt power supply to charge a tablet and it worked fine. It is possible that the first adapter I received may have been fine as well. My apologies to the manufacturer. The only reason I gave it 4 stars instead of 5 is because there was no user guide or manual included. That extra documentation could have emphasized the requirement that the input voltage must be greater than the output voltage.

Great fit. Works well.

I was able to use this to convert a larger HP Elitebook Dock adapter into a USB-C adapter. Instead of ponying up fir a high power USB-C adapter, I was able to turn use my HP adapter for $10. This was great - if it fits (I have micrometers to measure the diameter of the power barrel).Highly recommended!