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"A third benefit of Type-C is that it can deliver greater amounts of power -- up to 100 watts. That means you should be able to charge something as big as a lap
by ferrari8608 12y ago
"A third benefit of Type-C is that it can deliver greater amounts of power -- up to 100 watts. That means you should be able to charge something as big as a laptop via a USB cable, as well as the phones and other small devices you can charge today."
How awesome would it be to not need a dedicated power port on your laptop? In my experience with repairing laptops, that's one of the first things to break if you're keeping the thing plugged in constantly. It gets old disassembling the entire machine just to J-B Weld or solder the female end back in place. Then there's the idea that you may eventually be able to charge your other internet devices with the same cord you charge your laptop with. You get a cord with every device, so that means you'll have backups ready if your main charge cord breaks or disappears. This just seems like an all-around Good Thing.
- Alphasite_ 12y agoI'm a little worried that if these get made to the same standard that most usb cables are that one of these is going to kill someone.
- dogma1138 12y agoThat's 20V over 5amps that won't kill anything... Lenovo and some other companies already charge their laptops via USB (Normal A Type connector) on a dedicated port that connects to a 65W power adapter...
- matmann2001 12y ago20V over 5A could definitely kill someone.
- rasz_pl 12y agoin order to pump 5A with only 20A you would first need to liquefy someones flesh
- ars 12y agoYou should stop posting false information. A simple wound is enough. 5A @ 20V is 4 ohm. A wound is lower than that. And you don't need 20A to kill anyway. 20V with sweaty salty skin is right at the edge of dangerous territory.
- rasz_pl 12y agogo ahead and stab yourself with a multimeter, your gonna read somewhere around 300-1000ohms
- DanBC 12y agohttp://darwinawards.com/darwin/darwin1999-50.html http://darwinawards.com/darwin/darwin1999-50.html > (1999) A US Navy safety publication describes injuries incurred while doing don't's. One page described the fate of a sailor playing with a multimeter in an unauthorized manner. He was curious about the resistance level of the human body. He had a Simpson 260 multimeter, a small unit powered by a 9-volt battery. That may not seem powerful enough to be dangerous… but it can be deadly in the wrong hands. > The sailor took a probe in each hand to measure his bodily resistance from thumb to thumb. But the probes had sharp tips, and in his excitement he pressed his thumbs hard enough against the probes to break the skin. Once the salty conducting fluid known as blood was available, the current from the multimeter travelled right across the sailor's heart, disrupting the electrical regulation of his heartbeat. He died before he could record his Ohms. "It's the volts that jolt but the mills that kill" - voltage gives you the electric shock feeling but current across the heart will kill you.
- zyx321 12y agoIt's a Darwin Award because you have to go out of your way to achieve it. When was the last time you plugged in a USB device while bleeding profusely from both hands and/or standing barefoot in a pool of your own blood? Unless you are actively, visibly bleeding, it's going take well over 50V to cause any sort of lasting harm. Not to mention that it'll almost certainly default to 5V unless both ends are plugged in to devices supporting higher voltage.
- ars 12y agoYou can actually kill with 20V - just stab the copper wire into the thumb of each hand. 20V is fine through skin - too much resistance, but if you push it under the skin the resistance is much lower and it can kill. You might be able to do it with sweaty skin and squeeze the wire hard. Not certain. Not likely to happen by accident though. Also it's enough to cause a burn if you put it in your mouth.
- rasz_pl 12y agono you cant, thats gonna be ~60mA of DC across your body provided you have open flesh wounds on both hands :) painful yes, but not deadly
- CamperBob2 12y ago60 mA is a big deal, as it's getting into the current levels that are more likely to cause fibrillation (at least for AC). But the only way 20V will push that much current through your body is through open wounds. In a worst case scenario, yes, 20V could electrocute a person. More likely, though, a crappy USB cable carrying 5A will kill people by burning their house down.
- e12e 12y agoSome interesting points on "low" voltage and wounds here. I wonder about child proofing (and, as you say, fireproofing!). Will most people regard these as "100 watt dangerous" or "peripheral/signal-cable safe"? Frankly, I'm worried enough about the possibility of fire due to power over ethernet (eg: hotel wifi). All that said, modern, useful, standardised dc cabling does sound convenient.
- okasaki 12y agohttp://www.mpoweruk.com/shock.htm http://www.mpoweruk.com/shock.htm 20-50 mA - Can't breathe. Paralysis of the chest muscles. Possibly Fatal
- rasz_pl 12y ago
- mieses 12y agoThey are very safe. Toyota uses them for cabling around compressed hydrogen fuel tanks.
- desdiv 12y agoThat's very cool. Do you happen to have a picture of it?
- mieses 12y agoIt will be featured it the advertising photos. Frayed USB cables sparking next to compressed hydrogen. It will work a little like the subliminal death messages in the Marlborro cigarette ads, which were also very cool.
- ars 12y agoThat doesn't mean it's safe for a person. For hydrogen you want to avoid sparks, for a person you want to avoid current (which is delivered by having enough voltage).
- crdoconnor 12y agoThis would also be a great way to standardize DC power delivery throughout buildings: http://www.economist.com/news/international/21588104-humble-usb-cable-part-electrical-revolution-it-will-make-power-supplies http://www.economist.com/news/international/21588104-humble-... This would allow for more efficient use of solar power and batteries. Instead of converting DC from the panel/battery to AC and then back to DC again (losing a lot of power in the process), you could run a lot of appliances directly off a DC power network with USB connectors.
- UrMomReadsHN 12y agoPlugging your phone or laptop into a random usb slot into a wall to charge it isn't safe from a security standpoint. Since data flows with power, it is very easy to load up some malware while charging or steal data from the device. Unless I am misunderstood about what the article is proposing. It would be a nightmare if the only way I could charge my phone was to plug it into rouge usb ports. It is a security nightmare. it isn't like this is some sort of far off concept. http://www.nbcnews.com/id/44038933/ns/technology_and_science-security/t/small-usb-devices-can-do-some-big-time-damage/ http://www.nbcnews.com/id/44038933/ns/technology_and_science...
- tomswartz07 12y agoI haven't seen the specs of the Type C, but all of today's generation of USB cables can be modified to be 'power only' - Pins 1 and 4 of almost all USB cables are +5V and Gnd, respectively. It wouldn't be a stretch to get a cable with pins 2 & 3 disabled or snipped if you're that security concious. :)
- UrMomReadsHN 12y agoRight, you can buy them now. I just mean if it becomes required/acceptable to plug in all your devices whenever you see a usb port, we WILL start seeing malware transmitted that way. These things should be thought of ahead of time.
- 12y ago
- guidedlight 12y agoIt appears that the next MacBook Air will feature power charging via a USB Type-C port (the only other port on the laptop is a 3.5mm audio jack). http://9to5mac.com/2015/01/06/macbook-air-12-inch-redesign/?utm_medium=twitter&utm_source=twitterfeed http://9to5mac.com/2015/01/06/macbook-air-12-inch-redesign/?...
- toothbrush 12y agoOmigod is anyone else freaked out that on the pictures the power button is where the ESC key should be? My boss has a habit of giving us Apple hardware on which i have a habit of installing Linux or whatever, but that keyboard would require some seriously ugly scripting to avoid reprogramming my muscle memory :/
- UrMomReadsHN 12y agoPower button definitely shouldn't be mixed into the keyboard with the other keys where its easy to hit on accident. On the other hand it probably doesn't do anything unless you hold it down.
- toothbrush 12y agoIf it's like the predecessors, it'll bring up the "Shutdown/Restart/Logout?" dialog on OS X, and fire the ACPI shutdown event on Linux. Of course in Linux this can be remapped (i use it to tell my laptop to suspend), but indeed, top-left is horribly stupid. Top-right i've never banged it by accident, though.
- lucaspiller 12y agoOn OS X (recent versions) you need to hold it down to do anything. A quick tap as described does nothing.
- UrMomReadsHN 12y agoI just got a Windows laptop where the power button doesn't do anything unless you hold it. Been throwing me off.
- vidarh 12y agoIf only they end up being more solid than current mini and micro USB female ends. It's ridiculously easy to end up bending the female port sufficiently out of shape to get poor connection with the smaller USB ports - I have several devices that will only charge with specific cables that fits slightly snugger than average. There's also an ongoing problem with cables where the male end is not deep enough / set far enough back, so again many devices won't work with all cables. Looking at pictures here [1], it looks like the housing may be just as liable to poor/cheap implementations to end up with the same issues as micro-USB. [1] http://arstechnica.com/gadgets/2014/08/small-reversible-usb-type-c-connector-finalized/ http://arstechnica.com/gadgets/2014/08/small-reversible-usb-...
- joezydeco 12y agoI've had the same problem. Half the things my kids got for Christmas charge off Micro-B cables and almost all the cables and/or ports are damaged already. Yes, they're cheap chinese knockoffs, but even if they were more robost I don't hold out much hope for Mr Busy Travelling Businessman relying on this cable to run his entire laptop system.
- lsaferite 12y agoI've found Micro USB connectors to be horrible in comparison to Mini connectors. I never once had a Mini cable become useless while I regularly end up tossing Micro cables. And if you are rough on your devices, like my wife, charging become an exercise in frustration where you have to move the cable juuuuust so to get a charge.
- UrMomReadsHN 12y agoEvery single microusb cable I ever had ended up like that... what am I doing wrong?
- lsaferite 12y agoFrom my experience, if you regularly put any pressure in any direction you damage the cable or, even worse, the port.