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.

Maybe someone can get the word out to the USB Power Delivery design engineers to improve on the 100wPD system! If you have a device that draws 101w from a 100wPD source, it resets INSTEAD OF CURRENT LIMITING so at least you can pull the full 100w. If you draw 99w then you're good all day long. Power supplies typically have current limiting to allow you to pull the max current safely without the PS just shutting off. It's a shame USB Power Delivery source can't include current limiting instead of just resetting constantly if your device wants 101w. It appears to be an issues with the various PD chipsets and circuit design. I've seen 45 and 65wPD sources allow a draw more than rated and just limit the output. But for some reason the 100wPD just resets and keeps repeating endlessly! You'd think there'd be some consistency with design! These chipped cable adapters that are programmed to 100wPD (20v@5A) and used on devices that momentarily draw just over 100w will cause a reset and not work. Normally you should have a PD source that can provide more power than the connected device needs, but sometimes you have the opposite, which is why current limiting will at least provide limited power to the device needing a charge. These chipped PD cables and adapters open up alot of possibilities, but unless you have the USB ORG and design engineers understand these possibilities, things won't be as good as they could be! Hello McFly... Think, McFly, Think!

Works well for laptop, phone, etc. My power tester shows nothing abnormal.

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.

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.

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.

Bueno

It’s working flawlessly and charge any laptop/powerbank that we have.

I've been using it for a while and no issues at all.

Stopped working after a month

I had an older adapter and needed a second one. I bought this short cable to convert from the older barrel plug to USB C.

This is a reasonably decent DC (barrel connector) to USB-C cable (or adapter if you prefer) that's fairly well-constructed with an aluminum alloy shell and nylon braided cable. The overall build quality is fairly decent but typical nowadays; nonetheless, I do appreciate the aluminum alloy shell. This is a unidirectional cable that draws power from the barrel connector (aka DC) end of the cable and provides power via the USB-C end of the cable. However, there are a few things you should probably know first because this is NOT an ordinary USB-C cable rated for 100W (from the perspective of the USB-C connector). First of all, it does NOT have ae E-Marker chip which is required for ALL USB-C/C cable that provides power overall 60W. Obviously, this is NOT A USB-C/C cable so it's not required to have one; however, this may or may not work with certain devices because the chip is there for a reason; amongst them compatibility and safety. Secondly, it does NOT support ANY quick charging protocols except for PD/PPS which means devices that rely on QC 2.0/3.0 or any one of the other non-PD quick charging protocols can't be charged above 5V (i.e. NO quick charging). In addition, it supports relatively FEW PD charging profiles (for the lack of better words) and the following are ALL it supports; * PD3: 5V/1.5A * PD3: 9V/1.5A * PD3: 20V/5.0A * PPS: 3.3-11V/1.5A As such, it can NOT quick charge via PD3 at 5V/2A, 9V/2A, or even 12V/3A etc. Basically, it can ONLY quick charge (via PD3) at 1.5A when it's at or below 11V, and 5A when it's 20V. Granted, many, if not most, of the devices requiring 60-100W can usually be charged at 20V; however, this is NOT always the case. If you have devices that require, say, 60W, via 15V/4A, this will NOT work because 20V will immediate BURN and destroy your device and 11V would be TOO low for the device to work. Lastly, this cable/adapter is NOT capable of converting or increasing voltage from the source (i.e. DC) to the target (i.e. USB-C). What this means is simply that the INPUT voltage MUST be greater than or equal to the output voltage selected; otherwise, the input voltage will be provided via USB-C connector despite the fact a higher voltage (e.g. 20V) is being selected by the device after negotiation between the device and the cable (which chip inside to manage PD charging). For instance, if your power supply (laptop charger) is rated for 65W via 19V/3.42A (i.e. from some Toshiba laptops) and you have a device or laptop (rated for 60W) that can be charged via 20V/3A using PD3/USB-C, after negotiation a proper voltage/current is selected (i.e. 20V/3A) which well within the limit of this cable. However, 20V is greater than 19V that the power supply can provide so the voltage will remain at 19V and the max power to be provided via USB-C would be 19V/3A and this voltage might be too LOW for the device/laptop to work. While it's possible that it might still work for this particular scenario, one can imagine there are many other cases where this might not work. In short, the total power output (i.e. wattage) isn't the ONLY constraint here and the maximum voltage supported by the power supply must be taken into account because this cable is NOT capable of increasing the voltage to the required and selected (via PD protocol) value so the input voltage MUST be greater than equal to the target which max out at 20V. For example, a 150W power supply rated for 15V/10A will NOT be able to charge a laptop/device rated at 100W if it requires 20V to work. Both the wattage AND voltage of the source must exceed that of the target device for this cable to work. ≡ Value All things considered, this is a reasonably decent DC to USB-C cable that's well made and for the most part works as expected as long as you know what to expected and are aware of its limitations. It's reasonably priced at $18 for what it provides and its overall build quality, versatility, and performance. Your mileage might vary.