I have the extension cord against the actual purpose, namely to extend an IDE connector ordered. I needed the cable for my Raspberry Pi 2 to connect a display with it. However, the screen does not fit in the envelope, so I wanted to move it to the cable outside. Since the cable has all 40 pins, it is suitable for outstanding. BUT: However, if you are looking for an IDE extension, one is with the cable probably ill-advised, as all 40 pins are present and at IDE is known to be a gap in the terminal, so you know how rum, the cable must be plugged. We must therefore break or bend, which certainly is not the intended installation process a pin. The rule is: You have to analyze well before buying the cable and noted that it is completely inappropriate for a his own use.