First, read the English article below.

You can usually find this on the back of your desktop tower, or along the side or back of a laptop. Slim laptops may not have an Ethernet port, in which case you'll need to either use a USB Ethernet adapter or connect wirelessly if your router allows it. Make sure you're using an Ethernet cable (RJ45), not a telephone cable (RJ11). This can be any open LAN port on either the router or the switch, depending on your LAN setup. If you're using a router, your work is complete. Once all of the computers are connected to a LAN port, they will be assigned IPs automatically and will appear on the network. If you set up your LAN for gaming, you should be able to start your LAN game and have each computer connect. If you're using a switch and no router, you'll still need to assign IP addresses to each computer. You won't be able to access resources on a networked computer until file and printer sharing is enabled. You can select specific files, folders, and drives to share on each computer, as well as share access to printers. 

Now, please write a short abstract for it in Chinese. Abstract:
在你的电脑上找到以太网接口。 将以太网电缆的一端插入电脑。 将电缆的另一端插入LAN端口。 测试你的网络（仅路由器）。 启用文件和打印机共享。