USB yog qhov feem ntau dav siv tsheb npav sab nrauv tus qauv hauv PC teb. Nws yog siv los tswj cov kev sib txuas thiab kev sib txuas lus ntawm cov khoos phis tawm thiab khoom siv sab nraud. Lub USB interface txhawb nqa ntsaws-thiab-ua si thiab kub-hloov txoj haujlwm ntawm lub cuab yeej. Nrog txoj kev loj hlob sai ntawm khoos phis tawj khoos phis tawm, daim ntawv thov ntawm USB tau nce qhov kev ceev ntawm cov ntaub ntawv xa mus ntawm lwm cov khoom siv sab nraud. Qhov txiaj ntsig loj tshaj plaws ntawm kev nce hauv ceev rau cov neeg siv yog tias cov neeg siv tau siv ntau yam khoom siv sab nraud muaj txiaj ntsig, xws li USB 2.0 scanner thiab luam theej duab. Ib daim duab 4M tsuas yog siv sijhawm li 0.1 vib nas this, thiab qhov kev ua haujlwm tau zoo tau zoo heev.
Raws li kev sib cuam tshuam thiab cov ntaub ntawv sib txawv, USB txhawb pab kiag li lawm: nas, keyboard, tshuab luam ntawv, scanner, koob yees duab, flash disk, neeg uas ua MP3, lub xov tooj ntawm tes, digital lub koob yees duab, mobile hard disk, sab nraud kho qhov muag nrov, USB network card, ADSL Modem, Cable Modem Thiab lwm yam khoom siv hluav taws xob.
