硬件问题，谁能帮忙解决。电脑有多个usb插口， 当有一个 usb 外接硬盘插上去的时候很正常，再插一个上去，原来连在上边的那个usb硬盘就出毛病，一个劲的狂转，不能读写，基本上是not responding，Error message is: Windows delayed writing failed. windows can't save all data on drive H:\, the data has been lost. It may result from hardware failure or connection failure.....(大概如此）
原来以为是接口不好，可多次试验后发现只要连上两个就会出毛病，谁知道怎么解决这个问题啊？谢谢！
Probably not enough power.
All USB connectors on the same motherboard usually share their power. If you are connecting USB keyboard/mouse, as their power consumption is very limited, you don't usually have much problem. But it will be a different story if you are connecting USB HDD, which can drain the power supply.
In this case, you may have to attach external power supply to your HDD. There are two ways:
- Some mobile HDDs provide an additional PS/2 connector with the normal USB connector. You may connect the PS/2 too to your computer, so that part of the power requirement can be obtained there.
- If not, you may have use a transformer and connect your mobile HDD to an external power supply.
In this case, you may have to attach external power supply to your HDD. There are two ways:
- Some mobile HDDs provide an additional PS/2 connector with the normal USB connector. You may connect the PS/2 too to your computer, so that part of the power requirement can be obtained there.
- If not, you may have use a transformer and connect your mobile HDD to an external power supply.
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