USB yog txhua qhov chaw hauv lub ntiaj teb tech. Tag nrho cov khoom siv niaj hnub no muaj qhov chaw nres nkoj USB thiab feem ntau cov tshiab tuaj nrog cov kab sib txuas rau kev them nyiaj thiab hloov cov ntaub ntawv. USB4 tsis txawv ntawm cov ntsiab lus, thiab qhov tseeb, nws txawm siv tib USB-C cable uas qee cov khoom siv USB uas twb muaj lawm xav tau.
YUSB4 yog dab tsi?
Vim USB4 yog raws li Thunderbolt 3 tus qauv, nws yog ob zaug nrawm dua li USB version ua ntej nws, thiab nws suav nrog cov video bandwidth ntawm DisplayPort 2.0.
USB4 cov khoom siv thiab cov cables yuav tsis zoo li qhov txawv ntawm koj cov khoom siv USB 3, tab sis tom qab qhov kev txhim kho yog ob peb qhov kev txhim kho uas ua rau nws dhau ntawm cov qauv dhau los, yam koj yuav tshwj xeeb tshaj yog tias koj yog avid gamer.
Devices pib ntaus lub rhawv hauv 2021.
USB ncua sij hawm
Yog tias koj xav tau kev rov ua dua tshiab, ntawm no yog qhov nrawm nrawm ntawm hnub tso tawm thiab kev txwv bandwidth ntawm ob peb USB versions kawg:
- USB4: 2019; 40 Gbps
- USB 3.2: 2017; 20 Gbps
- USB 3.1: 2013; 10 Gbps
- USB 3.0: 2008; 5 Gbps
Qhov ntawd USB 3.x naming scheme yog outdated tab sis tseem nyob ntawm no rau brevity. Lawv mus los ntawm cov npe tshiab tam sim no.
USB4 yog qhov nrawm dua
USB4 yeej muaj ob qhov kev ntsuas ceev: 20 Gbps rau USB4 Gen 2x2 thiab 40 Gbps rau Gen 3x2. Qhov qub yog qhov yuav tsum tau ua rau txhua tus tswv tau sib xws, cov khoom siv, thiab cov hubs, thaum tom kawg tsuas yog yuav tsum tau ua rau USB4 hubs.
Ua nrawm, tsis muaj lus nug txog nws. Tab sis USB4 muaj ntau tshaj li qhov nrawm ntxiv:
Flexible Bandwidth
Yog tias koj siv ntau dua ib lub cuab yeej ib zaug, USB4 tuaj yeem nkag siab ntau npaum li cas bandwidth cov cuab yeej xav tau thiab muab txhua tus nqi tsim nyog. Piv txwv li, yog tias koj siv lub monitor thiab xa cov ntaub ntawv hla lub hard drive sab nraud, lawv ob leeg yuav ua haujlwm tau zoo txaus ntawm lawv tus kheej yam tsis tau nqus bandwidth ntau dhau los ntawm lwm lub cuab yeej.
Ib yam zoo sib xws, ua tau los ntawm DisplayPort 2.0 kev txhawb nqa, yog USB4 lub peev xwm hloov mus rau ib qho kev coj ua hom. Tapping rau hauv plaub txoj kab hauv ib zaug ntawm DisplayPort "Duab" Hom tso cai rau nws siv tag nrho 80 Gbps rau qee qhov kev ua tau zoo bandwidth, zoo li rau cov zaub du ntawm 8K saib. alt="
Powerful charging
Txhua USB4 cov khoom siv yuav txhawb nqa USB Fais Fab Xa (USB PD), uas tsuas yog txhais tau tias lawv tuaj yeem siv los them lwm yam khoom siv. Piv txwv li, koj lub laptop tuaj yeem siv los them koj lub xov tooj dhau USB4 ib yam li nws tuaj yeem nrog cov qauv qub. Los yog koj lub monitor uas ntsaws rau hauv phab ntsa tuaj yeem siv los ua lub zog koj lub laptop.
Txawm li cas los xij, zoo li qhov tshiab ntawm USB no sai dua thaum nws los txog rau kev hloov ntaub ntawv, nws tseem tuaj yeem xa ntau lub zog rau koj cov khoom siv. Txog li 100 watts tuaj yeem muab los ntawm USB4 chaw nres nkoj, yog li yog tias koj lub cuab yeej txhawb nqa kev them nyiaj sai, koj tuaj yeem cia siab tias yuav muaj zog dua sai dua.
Thiab zoo ib yam li cov ntaub ntawv hloov pauv hloov pauv li cas nyob ntawm cov cuab yeej siv, yog li muaj zog heev. Ib yam li lub laptop uas xav tau lub zog ntau dua, tuaj yeem siv qhov nws xav tau thaum lub zog qis dua li lub flash drive lossis ob lub mloog pob ntseg, tuaj yeem siv tsawg dua.
USB4 thiab Thunderbolt
Nws yuav nyuaj rau nkag siab tias ob lub thev naus laus zis no txawv li cas. Nws nyuaj rau taug qab txhua yam thaum koj pom tias USB4 yog raws li Thunderbolt 3 thiab lawv tau hloov pauv me ntsis, tab sis tom qab ntawd koj kuj tau hais tias lawv tsis yog technically zoo ib yam vim tias tseem muaj Thunderbolt 4.
Xyoo dhau los, Thunderbolt siv Mini DisplayPort kev sib txuas, tab sis thaum v3 tawm los, Intel tau hloov mus rau USB-C. Tsis tas li nrog qhov kev tso tawm no, Intel tau tso cai rau Thunderbolt siv dawb yam tsis tau them nqi se, yog li nws tsis tshua muaj kev txhawj xeeb rau cov tuam txhab kho vajtse los txhawb nws.
Ua raws Thunderbolt 3, USB-IF tshaj tawm USB4 thiab hais tias nws yuav ua raws li Thunderbolt 3 spec, txhais tau tias nws yuav txais qee yam ntawm nws cov yam ntxwv. Qhov no coj peb mus rau hnub no, qhov twg peb muaj tag nrho cov uas peb tau tham txog saum toj no: ceev ceev, rov qab sib raug zoo, thiab ntau lub zog tso zis.
Lub tswv yim yog tso cai rau ntau yam khoom siv ua haujlwm ua ke hauv kev sib koom ua ke. Cia siab tias muaj ib hnub, koj tuaj yeem yuav cov khoom siv uas ua haujlwm zoo dua nrog ib leeg, tsis tas yuav muaj ntau lub adapters thiab cov khoom siv tshwj xeeb cables.
Thunderbolt 4, txawm li cas los xij, uas yog qhov tshiab tshaj plaws, yog qhov txawv me ntsis. Nws qhov tsawg kawg nkaus PCIe kev txhawb nqa rau kev cia yog 32 Gbps es tsis txhob 16 Gbps hauv v3, thiab nws tso cai rau cov cables ntev 2 meters ua haujlwm ntawm tag nrho 40 Gbps peev xwm. Koj tuaj yeem pom qee qhov sib txawv ntawm versions 3 thiab 4, thiab USB4, ntawm Intel lub vev xaib.
Qhov nws tag nrho npau taws yog nce kev sib raug zoo rau cov cuab yeej no thiab txhim kho USB kev ua tau zoo.
Yuav ua li cas txog USB4 Compatibility?
Raws li USB4 Specification, nws tau sib xws nrog USB 3.2 thiab Thunderbolt 3 tus tswv thiab cov khoom siv. Cov khoom siv no twb siv USB-C, yog li kev txuas tsis yog qhov teeb meem nyob ntawd. Txawm li cas los xij, tsis tas yuav muaj kev txhawb nqa Thunderbolt 3, yog li tsis yog txhua qhov chaw nres nkoj USB4 yuav tsum lees txais txhua yam khoom siv Thunderbolt.
USB4 kuj tau sib xws nrog USB 2.0, tab sis txij li USB Hom-A yog lub cev sib txawv ntawm USB Hom-C, yuav tsum muaj lub adapter los ua kom lub cev sib txuas. Thiab ib yam li ib qho khoom siv rov qab tau tshaj, qhov ceev yog txwv rau qhov qeeb tshaj plaws ntawm ob, uas nyob rau hauv rooj plaub no yuav yog 480 Mbps teem los ntawm USB 2.0.
USB-C tsuas yog piav qhia txog kev sib txuas ntawm lub cev, yog li tsis yog txhua tus USB-C cables thiab cov chaw nres nkoj txhawb nqa 40 Gbps ceev. Koj yuav xav tau ib lub cable uas qhia tias nws ua, thiab koj yuav tsum tau ua tib zoo saib ntawm cov khoom koj yuav los xyuas kom meej tias lawv txhawb cov nqi koj xav tau. Ib tug 40 Gbps-certified cable yuav tsim nyog kom ua tiav cov max speeds (los yog tsawg kawg qhov chaw nyob ze rau lawv), whereas koj tus qauv USB-C cable yuav zoo rau USB 3.2 speeds (20 Gbps).
Dua, txij li USB-C thiab Thunderbolt 3 cov chaw nres nkoj zoo ib yam, nws yuav tsis meej tam sim yog tias qhov chaw nres nkoj koj siv yuav ua haujlwm nrog koj lub cuab yeej Thunderbolt vim nws yuav yog USB 3.2 chaw nres nkoj.
USB-IF pom zoo (tab sis tsis xav tau) cov khoom lag luam tau sau nrog qhov qhia meej ntawm cov ntaub ntawv tus nqi uas lawv txhawb nqa, xws li USB4 20 Gbps lossisUSB4 40 Gbps Lawv kuj qhia tias cov khoom lag luam uas ua raws cov qib kev ua tau zoo no siv lub logo tshwj xeeb, tab sis cov lus qhia tseem tsis tau ua tiav.
Qhov kev tshem tawm ntawm no yog qhov hloov pauv cov ntaub ntawv thiab kev siv hluav taws xob sib txawv ntawm Thunderbolt thiab USB cov khoom lag luam, yog li paub tseeb tias koj lub cuab yeej cov chaw nres nkoj yog dab tsi thiab hom cable koj muaj yuav mus ntev hauv kev paub seb koj li cas tuaj yeem txuas nrog. ib leeg thiab ua raws li koj xav kom lawv ua.
