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Hey guys! I ran into a setup where I got stuck and couldn't get to either make it work or to find the exact reason why it won't work. So please, help me out if you can! :) The setup: LG UltraFine 4K (24MD4KL-B) display with Thunderbolt 3 + USB-C hub in one of the USB-C ports MacBook Pro (2018) with Thunderbolt 3 connected to the TB3 input with TB3 cable Xiaomi MiBook Air 13.3" (2016) with USB-C 3.1 gen 1 connected to the TB3 input with either TB3 or USB-C cable, Windows 10 The good: The display works like a charm with the MacBook Pro, normal USB devices attached through the USB-C hub are recognized and working, MacBook is charged ---> all with a single TB3 cable The display is getting video/audio signals from the MiBook ---> with TB3 or USB-C 3.1 cable The bad: The display is not charging the MiBook, however both supports PD and the MiBook only needs 45W while the display can charge with up to 85W. I tried with TB3 cable and USB-C 3.1 gen 1 cable with PD support and none of them worked. Yes, the MiBook only has a USB-C 3.1 gen 1 port, but that's where it gets power from the original power brick and it works just fine. Also the USB-C hub and the connected devices are not showing up on the MiBook with Windows 10. The weird: Previously I had a Philips 258B6QUEB display which has USB-C 3.1 gen 1 input and also support PD (up to 60W) and it was working with both the MiBook and the MacBook without an issue (charging as well) and without any additional drivers. The question: So what am I missing? Why is the LG UltraFine not charging my MiBook? As far as I know, TB3 is backward compatible with older USB-C standards and power delivery should work. And although it's not the most important thing to get the USB-C hub working with the MiBook it'd be a nice to have. Any help would be appreciated! Have a good one, Pistabaaa^

As per the title. I googled for a while but I'm not sure i understand it. Can somebody ELI5? Basically I saw my newer smartphone pulling around 8V 1.6A when charging, while older smartphone just pulling around 5V 0.8A. I attached a USB power meter over my charger and get the readings. I'm thinking of powering my IoT devices over USB 3 charging port hopefully able to pull more power for high power components like relays.

So this is a bit of an idea I had recently... Potentially even an idea for exploration in an LTT video! I've been thinking about how it would be possible to outfit the HTC Vive (the headset I have) with USB-C instead of the included cable. Prologue: I had an opportunity a while ago to try out one of those wireless VR gaming backpack things in a store once that turns the Vive (I think it was the Vive version if I recall) into a wireless headset, and honestly... I could feel the lag vs a cable, it's just not the same. I just don't think the tech is there yet, even as impressive as all the fancy 5G or WiGig tech is... it's still not good enough. So since I'm going to be sticking to cables for now, I was trying to think of ways to take that bulky tri-cable setup and turn it into a single USB-C cable, coming straight from the headset, that goes straight intro the PC. VirtualLink is basically the failed attempt at a standard that is the reason NVIDIA puts USB-C connectors on their GPUs. It's a cool name but technically not the same thing as USB-C, it's an alt-mode. I believe the only difference to DisplayPort alt-mode is that it provides 2 DP lanes and a USB 3.2 lane instead of 1 DP lane and a USB 3.1 lane. (Though I might be wrong on the numbers there as there's conflicting info and even Wikipedia seems a little confused tbh) Point is, there's liely barely any practical performance difference between them (5Gbps vs 10 for the USB, basically irrelevant, speed does not equal latency and only the latter matters much to VR sensors), so there's no real reason to stress out about not using purpose-built USB-C based adapters. And VirtualLink-compatible hardware is practically non-existent because it's basically a failed standard. So with that out of the way, the problem we need to solve is carrying the USB 3, HDMI, and power for the headset all through a single cable. The first two are easy enough... It's the third that gets tricky. You might recall this adapter by Accell that made the headlines a little while ago, meant for adapting an Oculus Rift to using USB-C. But it only carries USB and HDMI, no power... Fine for the Rift since it can be powered by USB, but with the Vive, that barrel plug is required! The HTC Vive is powered via it's Link Box by 12VDC at 2A... Though it will work basically fine off 1A from my own testing with a bench supply. Interestingly, it also seems to work fine at 9V 2A. Additionally, a surprising fact is that the Link Box is completely optional and unnecessary! The only requirement for using the Vive without the Link Box is that your PC has Bluetooth built-in, and that you can find a female barrel jack to sacrifice that happens to be the right size! (Btw, I've actually noticed slightly better performance without the Link Box in some cases, looks like the radios in it take up some of that precious bandwidth, lol) Anyhow, that 12V power requirement is probably good news as that's a standard voltage for USB PD! So if the GPU's output port, or the USB-C port of a gaming laptop as another example, can supply 12V via USB PD then theoretically, this should be able to work. However, I have no clue if that's the case. For example the new laptop I've got (well, purchased, but it hasn't come in yet as it's a special order) lists the max wattage of the Thunderbolt 3 ports and claims to support USB PD (though doesn't say if that's for input only or both ways), but doesn't mention supported voltages anywhere. It can supply up to 15W, which would be 5V 3A or 12V 1.25A. Of course, the next problem is what to do at the other end of the cable, the headset end. That's where a USB-C hub comes in! These are easy enough to find on the cheap, and any should do as long as it's got an HDMI port and USB 3.0. Here's one for $25 for example: https://amazon.com/dp/B07QXMNF1X I have one for example with 3 USB 3.0 ports and one 4K/60Hz HDMI. I like it because it doesn't have any of that useless bloat like a bunch of 2.0 ports and a multi-card reader. Just the essentials so it's nice and compact. That said I haven't tested to ensure that it works with my headset, but I can confirm that (besides working with a phone which is what I bought it for) it works with a desktop through the USB-C port on the GPU. You can connect a display, USB 3.0 devices, and USB 2.0 devices, all at once, without a hitch. Of course that still doesn't solve our power delivery issue... For that I think the solution might be one of these! That's a USB-C PD trigger, it simply tricks the USB-C device it's connected to into supplying the correct output voltage you want... assuming that device is capable of outputting said voltage. If we set it to 12V, then connecting it to the headset should allow a 12V supply over a single cable! The only thing to watch out for would be that the hub you're using provides a USB Type-C passthrough port compatible with USB PD (up to 100W of passthrough power). That should allow the higher voltage to pass through the cable while the lower-voltage 5V is simultaneously supplied to power the hub's own USB ports! Yup that's right, two voltages at once. It really works. Isn't USB-C freakin' amazing? And that brings us to the final problem... Err, well... where the heck to find such a long USB-C cable! That I don't know, but I'm sure you could find one if you looked hard enough. Alright so I know this is a long post but I'd love thoughts on this, not so much a question but I'm hoping to incite a discussion about um... odd VR and USB-C things.

I have both a galaxy S 8 and a Dell Precision 7710 with usb-c / thunderbolt 3. I also own a thunderbolt 3 docking station (though the laptop can in theory pull work loads that would stop charging and in fact start draining the battery in general this isn't the case). What I am looking for is a car charger that will charge both my laptop and phone. Moving forward I would like to look into a usb c power bank that I can use with both my laptop and phone. So I realize that usb-c power delivery specs provide for 20v @ 5 amps or 100 watts of power delivery. I have yet to find a single usb-c car charger that has that rating. (Just for reference most car chargers are fused at 10 or 15 amps so 120 or 180 watts of max power so in theory it should be able to saturate a usb-c port even with dc-dc power conversion losses. The only one I have tried is this... https://www.amazon.com/gp/product/B07BTC644S/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 however, it does not charge the laptop. Does anyone know of a car charger that is usb-c that will charge a Dell Latitude 7710 via the usb-c port (and will also charge a galaxy s 8. Thanks in advance for help.