USB4 2.0 Pawiri Kuthamanga, Tsogolo Lili Pano
Monga opanga ma boardboard a PC amatsatira40 Gbps USB4, anthu sangachitire mwina koma kudabwa kuti chandamale chotsatira cha mulingo wolumikizana padziko lonse lapansi chidzakhala chiyani? Zimakhala USB4 2.0, yomwe imapereka80gbpsbandwidth ya data mbali iliyonse ndi 60W yopereka mphamvu (PD) ya cholumikizira. Kutumiza kwamphamvu kwa USB4 2.0 kumatha kufika ku 240 W (48 V, 5 A). Pakhala pali mitundu yambiri ya USB, yomwe imatha kufotokozedwa ngati yosiyana. Komabe, ndi kulumikizana pang'onopang'ono kwa ma interfaces, kuchuluka kwa mitundu ya USB kwatsika kwambiri. Pofika nthawi ya USB4, mawonekedwe a USB-C okha ndi omwe amakhala. Chifukwa chiyani pali mtundu wa 2.0? Kusintha kwakukulu kwambiri kwa USB4 2.0 ndikuthandizira kwake kusamutsa deta mpaka 80 Gbps, kupitilira mawonekedwe a Thunderbolt 4. Tiyeni tifufuze mwatsatanetsatane.
M'mbuyomu, muyezo wa USB4 1.0 udapangidwa kutengera ukadaulo wa Thunderbolt 3, wokhala ndi chiwopsezo chachikulu chotumizira deta.40 gbps. Mtundu wa 2.0 udapangidwa kutengera kamangidwe katsopano kakang'ono, ndikuwonjezera kuchuluka kwa kusamutsa deta kuchokera pachimake cha 40 Gbps mpaka 80 Gbps, ndikukhazikitsa denga latsopano lazachilengedwe la USB-C. Tiyenera kuzindikira kuti mlingo watsopano wa 80 Gbps umafuna zingwe zogwira ntchito ndipo ukhoza kuthandizidwa ndi zinthu zina zapamwamba m'tsogolomu. TheUSB 4 2.0zomangamanga za data zasinthidwanso. Chifukwa cha kapangidwe katsopano kagawo kakang'ono kotengera kachitidwe ka PAM3 kayimbidwe ka siginecha ndi chingwe chomwe changotulutsidwa kumene cha 80 Gbps, zida zitha kugwiritsa ntchito bandwidth mokwanira komanso moyenera. Kusintha uku kumakhudzansoUSB 3.2, Kutumiza kwamavidiyo a DisplayPort, ndi njira za data za PCI Express. M'mbuyomu, kuchuluka kwakukulu kwa USB 3.2 kunali 20 Gbps (USB3.2 Gen2x2). Pansi pa kamangidwe katsopano ka data, mulingo wa USB 3.2 udzadutsa 20 Gbps ndikufika pamalingaliro apamwamba.
Pankhani yogwirizana, USB4 2.0 idzakhala kumbuyo yogwirizana ndi USB4 1.0, USB 3.2, ndi Thunderbolt 3, kotero palibe chifukwa chodera nkhawa zokhudzana ndi kugwirizana. Kuphatikiza apo, kuti musangalale ndi kusamutsa kwa data kwa 80Gbps, yatsopano yogwira ntchito komanso yogwira ntchitoUSB-C kupita ku USB-Cdata chingwe chofunika kukwaniritsa liwiro ili. Zingwe za data za USB-C zokhazikika komanso zopatsa chidwi zikadali ndi bandwidth yopitilira 40Gbps. Kuti mumveke bwino magulu amakono a USB, mawonekedwe a USB ayamba kugwirizanitsa powatchula kutengera bandwidth yotumizira. Mwachitsanzo, USB4 v2.0 imagwirizana ndi USB 80Gbps, USB4 imagwirizana ndiUSB 40Gbps, USB 3.2 Gen2x2imagwirizana ndi 20Gbps, USB 3.2 Gen2 imagwirizana ndiUSB 10Gbps,ndiUSB 3.2 Gen1zimagwirizana ndi USB 5Gbps, ndi zina zotero. Zolemba zoyikapo, zolemba za mawonekedwe, ndi zolemba za chingwe cha data zitha kuwoneka mu chithunzi chotsatira.
Mu Okutobala 2022, USB-IF inali itatulutsa kale mtundu wa USB4 mtundu 2.0, womwe ungathe kukwaniritsa kufalikira kwa 80 Gbps. ZogwirizanaUSB Type-CndiUSB Power Delivery (USB PD)mafotokozedwe asinthidwanso. Pansi pa mawonekedwe a USB4 mtundu 2.0, mawonekedwe amtundu wa USB Type-C amathanso kukonzedwa mosagwirizana, kupereka liwiro lalikulu mpaka 120 Gbps mbali imodzi ndikusunga liwiro la 40 Gbps mbali ina. Pakadali pano, oyang'anira ambiri apamwamba a 4K amasankha kuthandizira kulumikizana kwa chingwe cha USB-C pama laputopu. Pambuyo pa kukhazikitsidwa kwa 80 Gbps USB4 2.0 yankho, ena4K 144Hzma monitor kapena 6K, 8K monitors amatha kulumikizana mosavuta ndi laputopu kudzera pa USB-C. Mawonekedwe a USB a 80 Gbps amakhalabe ndi doko la USB Type-C kuti atsimikizire kuti ikugwirizana ndi USB 4 Version 1.0, USB 3.2, USB 2.0 ndi Bingu 3 (USB PD EPR). Ma laputopu am'badwo watsopano omwe akuyembekezeka kukhazikitsidwa kumapeto kwa chaka chino kapena chaka chamawa akuyembekezeka kuyamba kuthandizira USB 80 Gbps. Kumbali imodzi, ma PC amasewera amphamvu kwambiri ndi oyang'anira azitha kugwiritsa ntchito bwino makadi azithunzi; kumbali ina, PCIe yakunja yolimba imathanso kuthamanga mokwanira.
Nthawi yotumiza: Sep-19-2025
