英语翻译翻译句子：55.我想买一个装置,但我不知道准确的名字,我宽带装在二楼,想要拉一条线到我一楼的房间,但一条线只能让

I want to buy a device,but I don't know what it is called.As you see,my broad band modem is fixed on the second floor,but I want to extend it to my room on the first floor by using a connecting cable.By connecting to this device,instead of only one computer,it enables multiple connections so that more people can surf the internet at the same time.