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Benson Leung
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Benson Leung

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Great to see another kernel security feature land set to land in v4.7. Nice work +Kees Cook!
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Benson Leung's profile photoEdwaᴚĐ Σℓℛῗς's profile photo
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+Benson Leung awesome! Thanks :)
(I didn't know they're higher than 900 mah) 
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+GTrusted is a relatively new consumer review site, but I highly recommend you guys follow them (they've been super active on G+ this month especially!)

They're focused on a lot of today's newest technology including many many #USB   #TypeC  that I haven't gotten my hands on yet, but they also focus on interoperability, and making sure that popular products work well with one another.

The people behind GTrusted also have their roots in electrical engineering and test equipment, so they do a deeper dive that other consumer electronics sites would do. You wouldn't see Engadget or The Verge post an USB PD analyzer trace for a charger, but +GTrusted would!

#USBC  
Social Media for Products. Use the World’s Largest Product Compatibility Database to Get Product Recommendations and Share User Experiences.
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Benson Leung's profile photoZachary Kjellberg's profile photo
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Wrote a comment on one of their posts. The material covered does look interesting.
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Interested in integrating a USB Type-C receptacle or plug into your hobbyist design?

Tyler at Scorpia has done a great guide on simple configurations to make a correct Type-C UFP, among other configurations.

#USBC   #USB   #TypeC  
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Carlos Rodríguez (Carlitos)'s profile photoBenson Leung's profile photoMark Stronge's profile photo
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+Benson Leung oh, cool, I did not know that. 
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I've posted another #USB #TypeC legacy cable review. OKPOW's A-to-C cable
tl;dr: Good cable.

This cable is identical to the GT-Coupe cable I reviewed earlier. OKPOW is just a different reseller for the same cable.

#USBC
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Milan Mody's profile photoBruno Slivar's profile photoCarlos Júnior's profile photoJoe Hoffman's profile photo
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I'm sure this is a dumb question, but why is it that some native USB-C chargers don't work with some USB-C devices?  Microsoft Display Dock and Intel's Core M Compute Stick only require ~2A, but most of the USB-C chargers I have don't seem to work with them (including the Anker USB-PD one, Google's Dual-Port, and many others).  The ones that DO work on them work interchangeably with both devices.  Is there something I'm missing that explains it?
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What are USB PD Power Rules?

A lot of my readers have pored over the USB PD specification for a long time (especially when the Nexus 5X/6P phones were announced) trying to figure out how power delivery works in the new USB world. However, much of the PD specification was defined before USB Type-C, when PD was meant to operate on Type-A and Type-B and a lot of the early concepts have since been deprecated or changed. One such concept that was confusing was “PD Power Profiles.”

Practically speaking, almost no one implemented “Power Profiles” in exactly the same way the spec defined. It had a 5V 2A requirement that confused people because most Type-C PD adapters were 5V 3A.

Looking at the newest version of the USB PD Spec Revision 2.0, V1.2, the section of “Power Profiles” is blank. “This section is deprecated.” Great! So no one has to ever talk about Power Profiles again!

Instead, the newest versions of USB PD have “Power Rules” (USB PD Section 10) which make a TON more sense, and I am pleased to say there are power sources on the market today that implement these rules. You can see the new rules in the table and graph I’ve attached.

Going forward, the new voltage levels to expect on new chargers are 5V, 9V, 15V, and 20V. The 12V level is now optional.

The new rules also introduce a “superset” guarantee. Larger wattage power sources must support all voltage levels below their maximum up to 3A. As the spec says, “Bigger is always better in user’s eyes – don’t want a degradation in performance. Higher power Sources do everything smaller ones do”

As a result, the consumer only needs to know that their device ships with a x watt power supply, and know that any power supply that is rated at > x watts will be at least as good as the one that shipped with the device. When comparing power supplies, they only need to look at the watt rating to know when a charger is objectively more capable than another. Under no circumstances should a more expensive charger charge your device slower than a cheaper one.

I’m also pleased to note that devices that implement the new USB PD R2.0 power rules are already on the market! +Anker's PowerPort+ USB-C PD has a 45W capable Type-C PD port which supports 5V/3A, 9V/3A, 15V/3A, and 20V/2.25A.Their product is available here : https://www.anker.com/products/A2053111

#USB #TypeC #USBC
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+Nathan K. Thanks! You hope me so much! ( Sorry my english, is not so good)
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Updated #USB   #TypeC  accessory review. I have amended the review I did on November 12, 2015 for +Tronsmart's Dual USB car charger.

Tronsmart has fixed the problem from the 1st generation where the C plug would only be rated at 2.4A but advertised 3A using the CC pullup. They fixed it by upgrading the hardware so that the charger does supply 3A reliably.

Also, they removed Quick Charge functionality on the Type-C port, which violated Section 4.8.2, as my followers know. This reduces the total power output on this charger from 36W to 33W, but it's still a good charger for your Type-C phone plus one other device (which may be QC, as the A port now supports QC3).

Great work Tronsmart! Thanks for following up.

#USBC  
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jack Clinton's profile photoPeter Muzyka's profile photoBenson Leung's profile photo
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+Peter Muzyka I don't test Type-A chargers. Use a cable with the correct CC termination (56kOhm) and it should be ok.
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Disclaimer : though I am linking to a brand new Type-C phone this is NOT a phone review. As I mentioned previously, I do not review phones. Instead, this is an accessory warning, for the cable that ships with that phone.

One of my colleagues recently bought a brand new P9000 from +Elephone Mobile. It came with a USB A-to-C cable and he was curious if it was a good cable, so he brought it to me.

My testing shows that this cable violates the #USB   #TypeC  specification. It uses a 10kΩ resistor where it should have used a 56kΩ resistor as mandated by the USB Type-C Specification.

This cable is potentially dangerous, as when combined with a Type-C device that can fast charge, it may damage Type-A chargers, hubs, or PC USB ports that are not designed for the current draw from new USB Type-C devices.

Please see my FAQ for more info : 
https://plus.google.com/+BensonLeung/posts/HakwCMmd346

+Elephone Mobile, please immediately stop bundling these cables, and let your customers know to be very careful with the A-to-C cable that ships with this device.

By the way, this all may be very familiar to other users, because another phone manufacturer from China, +OnePlus, shipped a bad cable with their phone last year as well.

http://www.elephonestore.com/elephone-p9000-deca-core-4g-phone.html
<h3>Elephone P9000 Helio P10 MTK6755 Octa Core 4GB RAM 4G LTE Android Phone</h3> <p>Elephone P9000 is the first Helio P10 Octa Core smart phone of Elephone. P9000 uses Helio P10 MTK6755 64 bit Octa Core processor, builds in 4GB RAM, owns 5.5 inch 1920 x 1080 screen, uses Android 6.0 OS and 13MP Sony IMX258 rear camera.</p> <h3>Please kindly note that Elephone P9000 Helio P10 MTK 6755 Mobile come with <span style="color: #ff0000;">international ...
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Benson Leung

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Not my review, but +Lee Hutchinson at +Ars Technica reviewed +nonda's Zus Type-C cable... :)

Nice work, Lee.

By the way, nonda actually did send me the same cable, and I did test it : It's a good cable, with the correct 56k Rp, and in spec IR drop. Type-C plug is deep-draw extruded. The only downside is the Type-A plug is a right-angle, which may block ports depending on your laptop/desktop/hub/charger Type-A layout.

#USB   #TypeC   #USBC  
It’s probably a strong cable, but it failed to survive a live-fire exercise.
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David Efros's profile photoNathan K.'s profile photoAlan Marchetti's profile photoMr. Bruce Arkwright, Jr.'s profile photo
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Failed live fire test...OK next time I am in a house fire, I'll remember this...not to charge phone....
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This should be an interesting bit of news to people interested in the LG G5 and follow my #USB   #TypeC  Explained series.

Recall that the USB Type-C spec has restrictions on proprietary charging methods that change voltage over the Type-C connector. https://plus.google.com/+BensonLeung/posts/cEvVQLXhyRX

I've said in the past that some phones' manufacturers violating of this part of the spec makes me wary of products and that I can't give any recommendation regarding these kinds of devices.

I don't review phones, but +GTrusted does, and they've done several mini investigations into the LG G5. It turns out that the G5 also implements USB Power Delivery as well as Qualcomm QC 3.0, and GTrusted has the analyzer traces to prove it.

This is an extremely pleasant surprise for me. This also means that the G5 may support Alternate Modes like VESA DisplayPort out of the box. GTrusted mentions that LG claims to supports it, but thus far they haven't done any testing to show it working yet.

It also means that the PD 2.0 charger that comes with my new Chromebook may work well with the G5 as well.

Another possibility is that charge-through hubs that would not work well with last years' Nexus phones (hubs that charge the phone, but allow the phone to expose USB-A ports) would work with the G5 as well. GTrusted, that would be another great thing to test!

Again, there's still a lot of unknown regarding the phone, so don't take this as a recommendation from me.

Thanks +GTrusted for doing this investigation! Keep up the good work, and hopefully you can help the public answer more questions about this phone.

#USBC  
LG G5 Supports USB Power Delivery In Addition to Qualcomm Quick Charge 3.0 over USB Type-C
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+Ken Hong I see that you work for LG. My statements before still stand, and this is not an apology or a correction.

If the LG G5 supports modifying Vbus beyond 5V by using QC, it violates Section 4.8.2.
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+HP announces a new Chromebook. I have been working on this system for the past several months!

It's got two #USB   #TypeC  ports that support USB 3.1 Gen 1 and VESA DisplayPort alternate mode and comes with a 45W charger.

#USBC  
Here's the first Chromebook in a while that's worth paying attention to: the HP Chromebook 13. It's a thin, all-metal machine with surprisingly capable specs. This is the first Chromebook to use...
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EdwaᴚĐ Σℓℛῗς's profile photoHristo Hristov's profile photoBenson Leung's profile photoThomas Tenkely's profile photo
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You're the man +Benson Leung​ :)
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+Edi Poinescu  this comment is on the G+ image, so people may not see it. You might best be served asking in the main post thread instead. That said, please check the community reviews, other users have tested powerbanks and made a spreadsheet of which charge at what speed:  https://www.reddit.com/r/Nexus6P/comments/3robzo/google_spreadsheet_for_usbc_cables_with_benson/
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I've posted a #USB   #TypeC  legacy adapter review. Lemeng's C-receptacle-to-A-plug.
tl;dr : VERY bad adapter. Completely ignores the spec. Don't buy this.

Some people have asked me why there are no such thing as Type-C Female to Type-A plug adapters. I explained why not in a post in my Type-C Explained Collection here : https://plus.google.com/+BensonLeung/posts/UFCHbSDRa2o

This company went ahead and made one anyway. It gets a score I've rarely given in my other reviews : 1 star

This adapter is all but identical to the Mobkit one I reviewed a coulpe months back. Same result. Don't buy it.

#USBC  
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Rohan Blake's profile photoSushubh's profile photoDaniel Law's profile photo
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Hi Benson I've been hearing your post about the Amazon faulty Type-C cable so I have a question. In fact, I am planning getting a Nexus 6P having the USB Type-C and I own a Xiaomi Power Bank which comes with Type-A micro-USB cable. My idea is to charge the phone with the power bank using a micro-USB to Type-C adapter. So, I just want to ask will there be any problem with the setting since I hear lots of people having issue with Type-C cables that are not meeting the specs and I wonder if this also apply to Type-C adapters as well. Thanks. Here is the link for the adapter that I am looking for. http://www.ebay.ca/itm/Xiaomi-USB-3-1-Type-C-Connector-to-Micro-USB-Mini-Adapter-Connector-for-Phone-PC/151888192171?_trksid=p2050601.c100085.m2372&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140211132617%26meid%3Dfe31bc8c4d7240c1922a81de813a7cee%26pid%3D100085%26rk%3D1%26rkt%3D4%26sd%3D151888192171%26clkid%3D5298152221574313119&_qi=RTM2247625

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  • Google
    Software Engineer, 2010 - present
    Linux kernel developer on the Chrome OS team.
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    Software Engineer, 2006 - 2010
  • Intel Corporation
    Software Engineer, 2005 - 2006
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Arms Technica and the tale of the Nonda Zus Kevlar cable
arstechnica.com

It’s probably a strong cable, but it failed to survive a live-fire exercise.

GTrusted - Discover Products, Check Compatibility, Share Your Experience
gtrusted.com

Social Media for Products. Use the World’s Largest Product Compatibility Database to Get Product Recommendations and Share User Experiences.

LG G5 Supports USB Power Delivery In Addition to Qualcomm Quick Charge 3...
gtrusted.com

LG G5 Supports USB Power Delivery In Addition to Qualcomm Quick Charge 3.0 over USB Type-C

Using USB Type-C on hobyist projects | scorpia
www.scorpia.co.uk

The new Type-C USB connector is the latest addition to the USB connector standards. It offers reversible plugs, direction independent cables

Amazon.com: Benson Leung's review of USB Type C Cable, OKPOW Hi-speed Go...
www.amazon.com

Find helpful customer reviews and review ratings for USB Type C Cable, OKPOW Hi-speed Gold Plated Nylon Braided USB Type C to Type A (USB-C

HP and Google made this thin, all-metal Chromebook
www.theverge.com

Here's the first Chromebook in a while that's worth paying attention to: the HP Chromebook 13. It's a thin, all-metal machine with surprisin

Amazon.com: Benson Leung's review of USB Type C Car Charger,Tronsmart 33...
www.amazon.com

Find helpful customer reviews and review ratings for USB Type C Car Charger,Tronsmart 33W Dual USB Car Charger with Quick Charge 3.0 Technol

Amazon.com: Benson Leung's review of Lemeng USB 3.0 (Type-A) Male to USB...
www.amazon.com

Find helpful customer reviews and review ratings for Lemeng USB 3.0 (Type-A) Male to USB3.1 (Type-C)Female Gold Plated Connector Converter A

Amazon.com: Benson Leung's review of Type C, iOrange-E USB C to USB 6.6 ...
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Find helpful customer reviews and review ratings for Type C, iOrange-E USB C to USB 6.6 Ft Braided Cable with LED Indicator for Nexus 6P, 5X

Intel made a huge mistake 10 years ago. Now 12,000 workers are paying th...
www.vox.com

Intel didn't take the market for smartphone chips seriously until it was too late.

USB-IF battles malware and bad chargers with Type-C Authentication spec
arstechnica.com

Spec will verify the capabilities and certification status of accessories.

Amazon.com
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Amazon.com Universal Wishlist for Benson Leung.

Amazon.com: Benson Leung's review of USB Type C Cable (3.3ft/1m) - Type ...
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Find helpful customer reviews and review ratings for USB Type C Cable (3.3ft/1m) - Type C to Type C Reversible - USB 3.1 Super Speed - Fast

Amazon.com: Benson Leung's review of Anker USB-C to USB 3.0 Cable (3.3ft...
www.amazon.com

Find helpful customer reviews and review ratings for Anker USB-C to USB 3.0 Cable (3.3ft) for USB Type-C Devices Including the MacBook, Chro

Amazon.com: Benson Leung's review of [2 in 1 Pack] Anker USB-C to Micro ...
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Find helpful customer reviews and review ratings for [2 in 1 Pack] Anker USB-C to Micro USB Adapter, Converts USB Type-C input to Micro USB,

Amazon.com: Benson Leung's review of Type C, USB C to USB A iOrange-E 10...
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Find helpful customer reviews and review ratings for Type C, USB C to USB A iOrange-E 10ft (3M) Braided Cable for 2015 New Macbook 12'', LG

Amazon.com: Benson Leung's review of 3.1 USB-A to USB-C Cable,Incipio [C...
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Find helpful customer reviews and review ratings for 3.1 USB-A to USB-C Cable,Incipio [Compact Design] [Tangle Free] 3.1 USB-A to USB-C Cabl

Amazon tightens US rules over non-compliant USB-C cables - BBC News
www.bbc.com

Amazon updates its own rules regarding the sale of USB-C cables in the US, saying only fully compliant products will be stocked on the site.

Amazon.com: Benson Leung's review of USB Type C, Smilism 3.3ft Type C (U...
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Find helpful customer reviews and review ratings for USB Type C, Smilism 3.3ft Type C (USB-C) to Type A (USB-A) Cable (1M) with Reversible C