你时常会发现计算机旁堆满了各种缆线,比如:USB电缆、串行电缆、并行端口电缆和电源线。除了计算机和显示器的电源线,大多数PC还有键盘线和鼠标线。每当你添置基本的外设时,比如:扬声器、调制解调器、PDA坞、打印机和扫描仪,电缆和电线的数量就会随之增长。 如果其中某个设备出现故障,或者你需要再添加一个特殊用途的外设,例如:数字相机或邮政专用天平,当你试图整理乱七八糟的电缆和 You often find your computer packed with cables, such as USB cables, serial cables, parallel port cables, and power cables. In addition to the power cords for computers and monitors, most PCs have keyboard and mouse lines. Whenever you add basic peripherals such as speakers, modems, PDA docks, printers and scanners, the number of cables and wires increases. If one of the devices fails or you need to add a special-purpose peripheral, such as a digital camera or postal balance, and when you’re trying to clean up the messy cables and