They had installed desks, laptops and network cables.

他们安装了办公桌、手提电脑和网线。

To turn a light into a Li-Fi router involves modulating its output, to carry a message, and linking it with a network cable to a modem that is connected to a telephone or cable-broadband service, just like a Wi-Fi router.

要将一个可见光源变成能够携带信息的Li-Fi路由器，需要调制其光强以及用网线将其与一个调制解调器（与电话或宽带网线相连）连接，一如Wi-Fi路由器。