So, hence, that external disk drive was useless from then on.
所以，从那以后，那个外置硬盘驱动器就没法用了。
External disk drive
原声例句
美语情景对话
2009 ESLPod
If you have a computer, you should also have another external disk drive or some sort of online service that backs up your files.
如果你有一台电脑，你还应该有另一个外部磁盘驱动器或某种在线服务来备份你的文件。
历届苹果发布会
And we're introducing a family of products with Macintosh: the image writer printer, an external disk drive, a modem, a numeric keypad, a Macintosh carrying case, and a security kit so your Macintosh won't go anywhere without you.
图像写入打印机，一个外部磁盘驱动器，一个调制解调器，一个数字键盘，一个Macintosh的手提箱，还有一个安全工具包，这样你的Macintosh就不会扔下你去别的地方了。
英语百科
Disk enclosure
A disk enclosure is a specialized casing designed to hold and power disk drives while providing a mechanism to allow them to communicate to one or more separate computers.
Drive enclosures provide power to the drives therein and convert the data sent across their native data bus into a format usable by an external connection on the computer to which it is connected. In some cases, the conversion is as trivial as carrying a signal between different connector types. In others, it is complicated enough to require a separate embedded system to retransmit data over connector and signal of a different standard.