You absolutely can see if you got the wrong one, it doesn’t work or tells you it’s slow charging. No damage can be done by getting it wrong (Unless you buy noncompliant stuff, which appears to be uncommon). Gallium Nitride (GaN) technology has made chargers a fraction of the size of silicon-based models only a couple of years old, and once considered small themselves. The OneWorld 65 looks like any international adapter but boasts a built-in 65W PD Charger and can charge up to six devices simultaneously. The two USB-A ports are handy as most of us still have devices that require a charging cable connection into this old standard. Each can handle 12W charging but that capacity is shared between the two ports so will be lower if both are in use. This is fine if you are charging one phone or two lower-powered devices such as headphones or watch. USB-C also lets you implement digital signing for device validity verification. If you can read between the lines, it smells of DRM, and that’s what it is. Some device manufacturers, especially from the HP/Dell/Lenovo dark triad, will implement DRM that makes their laptop throttle its CPU if the charger or the cable is third-party – even if it’s all the same 100 W. It sort of makes sense when Dell does that in cases where they push 6A through a verified-to-work combination of charger, cable, and laptop. But at this point, let’s be fair, the conscientious choice would’ve been to go for EPR and 140 W instead, and throttling is inexcusable either way.

I do think leaving real regulated 12v out of PD was a mistake due to all the legacy stuff like routers. There are one 65W USB-C Port, one 30W USB-C port and two 12W USB A ports for simultaneous charging of laptop, tablet, phones and other devices. Four of these five ports are full-size USB-As, rated at 12W. The device’s maximum output with all ports in use is 107W, which means you can’t run them all at full power at once. It works fine so far, though I my with 3 HDD’s max because the aforementioned Xbox PSU only has 1A on the 5v output. And the typical HDD will eat 0.3A from what I recall measuring. I was worried about the digitally negotiated power messing up and frying stuff, but that’s just not happening in the real world at any noticable rate. The Ugreen Nexode 200W USB-C charger allows you to charge six devices at the same time, and so avoid having to plug in multiple chargers for the task and free up space on your desktop. While it’s too heavy to be truly portable, it is a super-compact size for so many ports.This Satechi’s desktop charger has two USB-C Power Delivery ports and two USB-A ports—especially useful if you’re travelling with more than one power-hungry USB-C device or a mix of USB-C and USB-A. We haven’t seen PD chargers this small before. They are tiny—about the size of Apple’s weedy 5W iPhone charger but over 10x more powerful. The 65W Nano II charger weighs just 132g and comes in at 41.7-x-36-x-44mm. The US version features neat foldable pins.

The extra connectors aren’t pointless extra expense even though 3.0 is still rare, they are essential for video output on phones and such without having an extra connector, which would be terrible as micro-hdmi doesn’t appear to be mechanically reliable, at least not the common cheap ones. This desktop charger from Nektek has a shorter (1m) extension cable than the Ugreen Nexode desktop charger, and it has some limitations but it does offer great value for money. Say, you plug a charger into a laptop. The charger provides a pull up on the CC line, the laptop will detect that, and if your laptop is USB-C charging-capable, it will put a pull down onto the CC line. The charger will then provide 5 V, and will get ready to talk PD for anything higher than that. As you can see, before higher voltages are possible, you first have to go the 5 V and analog communications way. Put your 5.1 kΩ resistors onto CC pins, get 5 V, and talk the power supply into giving you a higher voltage from there. At 14.7oz (417g) it isn’t super-lightweight but is a desktop charger so will probably not be travelling with you. I am wondering, though – is there such a thing as a USB-C charger that could output 5v and 20v (or 15v, or 12v) *at the same time*? Currently I’m powering a thin client (acting as a file server) via a single Xbox PSU, which outputs both 12v – great for the PC itself as well as the HDD’s – and also 5v which helps for those same HDD’s, because the thin client itself can only support powering a single SATA drive – the other drives need external power.

And you really can’t easily see if you have the wrong one – the quagmire that USB has become means the cable may well be working perfectly for data but won’t do the voltage negotiation BS properly so doesn’t actually provide the right power at all – but the host device won’t know or care, to it its just an older spec USB cable doing its thing. And even if it does pop up that freindly message of ‘this cable is shit or the power supply too weedy’ you then have to spend ages cycling through the heap of these damn cables looking for the one that isn’t broken yet and actually was built to spec in the first place… A charger has to support all steps below its highest step, which means that 20 V-capable chargers also have to support 5 V, 9 V, and 15 V as well – in practice, most of them indeed do, and only some might skip a step or two. You can also get voltages in-between, down to 3.3 V, even, using a PD standard called PPS (or the AVS standard for EPR-range chargers) – it’s not a requirement, but you’ll find that quite a few USB-C PSUs will oblige, and PPS support is usually written on the label. I’m not a professional writer or anything, but a recurring theme is using the same word twice in a sentence which is hard to follow, as well as including more than one thought per sentence. One random example: