思科ws-c2960-48pst-l 48口二层千兆poe交换机，48口是千兆还是百兆

思科交换机型号解释 1/view/15f673d9f705cc1755270948?pn=2&vw=all&ssid=&from=&bd_page_type=1&uid=CD9B4AC76304FB13B1E46ED3757A4A53&pu=rc@1,pic@on,sl@1,pw@1000,sz@224_220,pd@1,fz@2,lp@0,tpl@color,&st=1&wk=rd&maxpage=4