{"id":3846,"date":"2019-12-03T07:00:00","date_gmt":"2019-12-03T12:00:00","guid":{"rendered":"https:\/\/langa.com\/?p=3846"},"modified":"2019-11-20T14:48:18","modified_gmt":"2019-11-20T19:48:18","slug":"3846","status":"publish","type":"post","link":"https:\/\/langa.com\/index.php\/2019\/12\/03\/3846\/","title":{"rendered":"“Does USB 3.2 Gen 1 support fast charging?”"},"content":{"rendered":"\n

(Answer requested by Rinki Singh)<\/small><\/em><\/p>\n\n\n\n

No. Normal USB 3.2 Gen 1<\/strong> combined data\/power sockets can deliver a maximum of 900mA at 5v, for 4.5w total. It\u2019s not meant for use has a high-power charging port. (USB standards<\/a> — Wikipedia)<\/p>\n\n\n\n

Separately, there are special-purpose USB PD<\/strong> (power-delivery<\/strong>) socket standards, and USB BC<\/strong> (battery-charging<\/strong>) socket standards; both of which can deliver higher power; but they are not<\/strong> the same as the normal USB 3.2 <\/strong> data+power sockets.<\/p>\n\n\n\n

Even more confusing, USB 3.2 Gen 1<\/strong> is really just a renaming of the previously-existing USB 3.0<\/strong> standard; the name was retroactively changed for consistency with the naming conventions of later generations; but did not change the underlying standard itself. (See the Cnet article, “Making sense of current and confusing USB standards<\/a>.”)<\/p>\n\n\n\n

And, just to tie it with a really messy bow, there are also over 20 different \u201cfast charging\u201d technologies in play today. (See Digital Citizen’s “Fast charging standards<\/a>.”)<\/p>\n\n\n\n

Yes, it\u2019s a mess.<\/p>\n\n\n\n

So, the safest thing is NOT<\/strong> to assume that any USB port is capable of supplying high power and\/or whatever flavor of fast charging that your device requires unless<\/em><\/strong> the USB port\u2019s documentation or labelling explicitly claims such.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Permalink: https:\/\/langa.com\/?p=3846<\/a><\/strong><\/em><\/p>\n\n\n\n

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(Answer requested by Rinki Singh) No. Normal USB 3.2 Gen 1 combined data\/power sockets can deliver a maximum of 900mA at 5v, for 4.5w total. It\u2019s not meant for use has a high-power charging port. (USB standards — Wikipedia) Separately, there are special-purpose USB PD (power-delivery) socket standards, and USB BC (battery-charging) socket standards; both…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[7,30],"tags":[],"class_list":["post-3846","post","type-post","status-publish","format-standard","hentry","category-a-reader-asks","category-hardware"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/saaiox-3846","jetpack-related-posts":[{"id":2913,"url":"https:\/\/langa.com\/index.php\/2019\/06\/07\/what-is-the-best-way-to-charge-several-devices-at-once-on-usb\/","url_meta":{"origin":3846,"position":0},"title":"“What is the best way to charge several devices at once on USB?”","author":"Fred Langa","date":"2019-06-07","format":false,"excerpt":"A good externally powered USB hub --- that is, one with its own separate power supply --- is what you need. The external power is key because USB is fundamentally a data transfer standard, not a battery-charging standard. Charging takes a lot more power than data-transfer; a PC's built-in USB\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/06\/external-usb-hub.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":5145,"url":"https:\/\/langa.com\/index.php\/2020\/06\/05\/why-is-there-no-considerable-technical-development-in-laptop-and-phone-chargers-over-the-years\/","url_meta":{"origin":3846,"position":1},"title":"“Why is there no considerable technical development in laptop and phone chargers over the years?”","author":"Fred Langa","date":"2020-06-05","format":false,"excerpt":"(Answer requested by Prapat Saxena) I disagree with the premise of your question. Most charging is by USB these days. When USB 1 came out in 1996, it supported 5 volt\/0.5amp charging; 2.5 watts. Today's newest USB charging supports up to 20 volts\/5 amps; 100 watts. And there are now\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/11\/USB_icon.png?fit=417%2C200&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2757,"url":"https:\/\/langa.com\/index.php\/2019\/05\/14\/real-life-measurements-show-ways-to-speed-smartphone-charging-times\/","url_meta":{"origin":3846,"position":2},"title":"Real-life measurements show ways to speed smartphone charging times","author":"Fred Langa","date":"2019-05-14","format":false,"excerpt":"In response to \u201cIs there any way to charge a phone faster?,\u201d reader Peter Rothschild sent in the following interesting and very surprising post, based on his real-life measurements of smartphone charging times. Fascinating info about differences in USB charging cables! (Thanks, Peter!): \"I have done a bit of experimenting\u2026","rel":"","context":"In "Hardware"","block_context":{"text":"Hardware","link":"https:\/\/langa.com\/index.php\/category\/hardware\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3355,"url":"https:\/\/langa.com\/index.php\/2019\/09\/05\/how-do-i-stop-my-charging-ports-from-dust-and-other-particles-resulting-in-the-phone-not-charging\/","url_meta":{"origin":3846,"position":3},"title":"“How do I stop my charging ports from collecting dust etc., resulting in the phone not charging?”","author":"Fred Langa","date":"2019-09-05","format":false,"excerpt":"(Answer requested by Julian Diep) If you can\u2019t just blow the dust from the port before each use, and if a phone-enclosing case is overkill, try a plastic or rubber \u201cUSB Port Cover;\u201d a malleable, nonconductive plug that fit snugly into an unused USB socket, preventing debris from entering. They're\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/09\/usb-covers.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/09\/usb-covers.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/09\/usb-covers.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/09\/usb-covers.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/09\/usb-covers.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":4095,"url":"https:\/\/langa.com\/index.php\/2020\/01\/21\/do-android-charger-cords-generally-lose-their-effectiveness-over-time\/","url_meta":{"origin":3846,"position":4},"title":"“Do Android charger cords generally lose their effectiveness over time?”","author":"Fred Langa","date":"2020-01-21","format":false,"excerpt":"(Answer requested by Nima Jooyandeh) Android, Apple, it doesn't matter: Yes, any charger cord can wear out and lose effectiveness over time. Charger cords are technically cables --- an assemblage of seperate wires wound together into a bundle;4 and coated with a plastic insulator. (The separate wires in USB charger\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2020\/01\/broken-charger-wires-123.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2020\/01\/broken-charger-wires-123.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2020\/01\/broken-charger-wires-123.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2020\/01\/broken-charger-wires-123.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":2205,"url":"https:\/\/langa.com\/index.php\/2019\/03\/13\/readers-reply-to-cheapest-way-to-network-post\/","url_meta":{"origin":3846,"position":5},"title":"Readers reply to “cheapest way to network” post","author":"Fred Langa","date":"2019-03-13","format":false,"excerpt":"In \"What\u2019s the cheapest way to network an external hard drive?\" I suggested a fully-functional, zero-cost option: Connect the drive to any PC that's already on the network, and use the OS's built-in network sharing function (e.g. Win10's Give access to\/Advanced Sharing\/ option) to let others access the drive. Several\u2026","rel":"","context":"In "From the InBox"","block_context":{"text":"From the InBox","link":"https:\/\/langa.com\/index.php\/category\/from-the-inbox\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_likes_enabled":false,"_links":{"self":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts\/3846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/comments?post=3846"}],"version-history":[{"count":3,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts\/3846\/revisions"}],"predecessor-version":[{"id":3850,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts\/3846\/revisions\/3850"}],"wp:attachment":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/media?parent=3846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/categories?post=3846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/tags?post=3846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}