Notebook HDD Box Retrofit desktop HDD Enclosure

is actually the SATA to USB interface, because the original hard disk box is used for the notebook hard disk, so there is no external power supply, directly 5V power, and now in order to be able to drive desktop drives, to the original hard disk box plus 12V external power supply and 5V external power supply.

Check out the SATA interface first:

The PIN definition for the hard drive:

What we are going to do is to connect the 12V three pins of the SATA interface, and then bring the three lines of 5V, 12V, GND, and then connect to the small circuit board that used lm2940ct-5.0 to do a 12V to 5V. The effect is as follows:

There is a problem:

When using a small circuit board to power the hard drive, and the USB port is not connected to the computer, lm2940ct-5.0 will be very hot, I do not know what the reason.

Reference:

Http://bbs.zol.com.cn/quanzi/d41_684.html

Http://wenku.baidu.com/view/783f24bff121dd36a32d8219.html

Http://www.360doc.com/content/12/0302/23/8004292_191240277.shtml

Notebook HDD Box Retrofit desktop HDD Enclosure