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Nová verzia USB podporuje maximálnu rýchlosť až 120 Gbps

Značky: USB

DSL.sk, 19.10.2022


Nová verzia USB označená USB4 2.0 umožní maximálnu rýchlosť až 120 Gbps, ako sme upozorňovali už krátko po oznámení pripravovanej novej verzie v septembri.

Aktuálne to vo svojom oznámení potvrdila organizácia USB Implementers Forum, USB-IF, ktorá informovala o vydaní špecifikácie novej verzie.

Nová verzia bola avizovaná na začiatku septembra. Doterajšia posledná verzie USB, USB4, je postavená na protokole vychádzajúcom z technológie Thunderbolt. Využíva káble typu Type-C s dvomi linkami o rýchlosti 20 Gbps a umožňuje tak spolu prenášať dáta rýchlosťou 40 Gbps v oboch smeroch.

USB4 2.0 zvýši rýchlosť na dvojnásobok, teda 80 Gbps. USB-IF aktuálne zároveň potvrdila, že to bude vďaka prechodu na moduláciu PAM-3.

Ako sme upozornili v septembri na základe podpory asymetrického režimu testovacím hardvérom od spoločnosti Keysight, USB4 2.0 bude podporovať aj asymetrický režim s využívaním troch liniek v jednom smere a jednej v druhom. To umožní v jednom smere rýchlosť 120 Gbps a v druhom 40 Gbps. Aktuálne oznámenie USB-IF to potvrdilo.

Oznámenie tiež opäť naznačuje, že nové dvojnásobné rýchlosti bude možné dosahovať len cez nové aktívne káble, jednoznačne to ale neuvádza. Oznámenie totiž spomína doterajšie 40 Gbps USB Type-C pasívne káble a novodefinované 80 Gbps aktívne USB Type-C káble, bližšie to ale nevysvetľuje.


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Diskusia:
                               
 

Tak ten kabel ma 2 ci 4 linky?
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3
Odpovedať Známka: 10.0 Hodnotiť:
 

Keysight nie je zrovná lacná značka. A áno, 4 linky ale koľko má pinov ten USB4 rev. 2 konektor??
Onedlho za vrátime k nejakému mikro centronics vyzerajúcemu konektoru
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no veď už teraz to v podstate nie je serial, keďže to má viac ako 1 linku.
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USB sa premenuje na COM, a viaclinkove USB na LPT :-)
Odpovedať Známka: 10.0 Hodnotiť:
 

Vráťme mikro USB do éry 2-káblových 5,25" diskov.
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cize take MFM a RLL? No tie neboli zle, taky ten krasny zvuk pri rozbiehani uz na nicom novom ludia nezaziju.

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Ešte má taký odložený pre prípad že by sa M.2 poserkalo
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To uz aj 12G SAS by mali premenovat, kedze ma viac liniek ;)
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Na Oľajno, či ako?
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To len jasne dokazuje, aké neuvedomelé je predpokladať, že sériovosť neexistuje i v kontexte priekazne širších synergetických súvislostí.
Odpovedať Známka: 10.0 Hodnotiť:
 

hmm a kde je EU a ich uradnici a ten typek s buncov kablov, ktore budu nahradene jednym USB-C ... to je tak ked ludia rozhoduju o veciach o ktorych nemaju ani sajnu, vedia o tom asi tolko ze ako sa to vola a kde to maju Strcit ... ale ze to nebude fungovat bezpodmienecne to uz nikoho netrapi a ze odpad z kablov bude plus minus rovnaky ...
Odpovedať Známka: -5.0 Hodnotiť:
 

Pisali niekde, ze menia koncovku alebo ze nebude spatna kompatibilita?
Odpovedať Známka: 10.0 Hodnotiť:
 

každopádne je to monopol, ktorý treba pokutovať. Prečo by nemohol byť privilegovaný napríklad Firewire, alebo Jack? Prečo práve USB?
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ja chcem usb c ale musi tam v tom usb c tiect 220v ani o volt menej 220v!

este raz
220v
musi!



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Ja tu mám 250V v zásuvkách.
Mám tých 30V nejako odstrihnúť?
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Nebud setrilko a zapoj na to spotrebic, co bude mat taku spotrebu, ze spravy ten ubytok na vedeni.
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