YSK: The USB port on a lot of modern routers let you connect your external hard drive to it. It will then always be accessible through your network. It will basically appear as a regular drive on your computer once configured.
from /r/YouShouldKnow
YSK：很多現代路由器上的USB端口可以讓你把你的外部硬盤連接到它上面。然後，它將始終可以通過你的網絡訪問。一旦配置好，它基本上會作爲一個普通的驅動器出現在你的電腦上。