usb（通(tong)用串行總線英語：Universal Serial Bus）插頭用于規范電(dian)腦與(yu)外部設備(bei)的連接和(he)通(tong)訊，是(shi)一種特殊(shu)的插頭，多用于數碼電(dian)子產品，常(chang)見的USB插頭厚(hou)度(du)是(shi)4.5mm左右。

usb插(cha)(cha)(cha)(cha)座是(shi)一(yi)種安全(quan)節電(dian)(dian)(dian)(dian)(dian)、帶USB接(jie)(jie)口(kou)(kou)的(de)(de)(de)(de)(de)(de)通(tong)用(yong)(yong)(yong)插(cha)(cha)(cha)(cha)座，包括(kuo)插(cha)(cha)(cha)(cha)座主體(ti)，在(zai)所(suo)(suo)述插(cha)(cha)(cha)(cha)座主體(ti)上(shang)設(she)(she)有(you)USB母(mu)座，在(zai)所(suo)(suo)述usb母(mu)座上(shang)設(she)(she)有(you)聯動(dong)開關(guan)(guan)和usb插(cha)(cha)(cha)(cha)口(kou)(kou)；在(zai)所(suo)(suo)述插(cha)(cha)(cha)(cha)座主體(ti)內設(she)(she)有(you)充電(dian)(dian)(dian)(dian)(dian)器模塊(kuai)，所(suo)(suo)述充電(dian)(dian)(dian)(dian)(dian)器模塊(kuai)的(de)(de)(de)(de)(de)(de)輸(shu)入(ru)端與(yu)所(suo)(suo)述聯動(dong)開關(guan)(guan)的(de)(de)(de)(de)(de)(de)輸(shu)出端并(bing)(bing)聯，其輸(shu)出端的(de)(de)(de)(de)(de)(de)正(zheng)負極與(yu)usb插(cha)(cha)(cha)(cha)口(kou)(kou)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)端的(de)(de)(de)(de)(de)(de)正(zheng)負極對應聯接(jie)(jie)，所(suo)(suo)述聯動(dong)開關(guan)(guan)的(de)(de)(de)(de)(de)(de)輸(shu)入(ru)端與(yu)電(dian)(dian)(dian)(dian)(dian)源(yuan)連(lian)接(jie)(jie)。本實用(yong)(yong)(yong)新型(xing)將多(duo)個usb插(cha)(cha)(cha)(cha)口(kou)(kou)附加于(yu)通(tong)用(yong)(yong)(yong)開關(guan)(guan)上(shang)，并(bing)(bing)且使usb插(cha)(cha)(cha)(cha)座只(zhi)在(zai)需要用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)時才與(yu)市電(dian)(dian)(dian)(dian)(dian)接(jie)(jie)通(tong)，這(zhe)樣不(bu)僅具有(you)只(zhi)需用(yong)(yong)(yong)usb插(cha)(cha)(cha)(cha)線(xian)將用(yong)(yong)(yong)低壓用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)器與(yu)通(tong)用(yong)(yong)(yong)開關(guan)(guan)上(shang)的(de)(de)(de)(de)(de)(de)usb插(cha)(cha)(cha)(cha)口(kou)(kou)連(lian)接(jie)(jie)即可(ke)給用(yong)(yong)(yong)低壓用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)器充電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)優點(dian)(dian)，而(er)且還具有(you)使設(she)(she)備不(bu)會長(chang)期接(jie)(jie)通(tong)電(dian)(dian)(dian)(dian)(dian)源(yuan)，延長(chang)設(she)(she)備壽命(ming)，節省電(dian)(dian)(dian)(dian)(dian)力(li)、消除(chu)隱(yin)患的(de)(de)(de)(de)(de)(de)優點(dian)(dian)。