How to convert SATA to IDE and IDE to SATA

You can convert an IDE motherboard to use a Serial ATA interface for HDD,DVD drive,etc. And vice versa for a SATA motherboard to use an IDE/PATA hard drives.
A 2 in 1 SATA to IDE  to SATA Adapter or bidirectional IDE/ SATA Converter can meet the both convertions of the port.

P-ata and 80pin-cable.jpg

"P-ata and 80pin-cable". Licensed under CC BY-SA 3.0 via Wikimedia Commons.

It includes 4-pin power socket, IDE port (An IDE port section consists standard 40 pin IDE) and two  SATA ports.
1 x 40 pin port (IDE/PATA)
2 x SATA port
1 x 4 pin power connector
Mount the converter directly onto the motherboard IDE channel or hard drive, and the SATA port to the SATA hardware via SATA cable.