Question Serial_PS2 header on my MOBO identical to USB 3.0 Header.

[TenekTek]

Can I use this port on my DELL XPS 8300 stock motherboard to plug a USB 3.0 internal cable into and use on my new case? They are the exact identical pins as USB 3.0 header and the correct shape with even that little cutout to the side.

 

[BFG-9000]

Well sure they're identical because then Dell could use standard commodity plugs and sockets instead of paying more for custom parts. But what it is wired to only works with the Serial Port/PS2 Port Adapter that was sold as an add-on by Dell.

USB 3.0 was extraordinarily expensive back in 2011, requiring an add-on chip because no chipset Southbridge supported it yet. Do you really think if Dell had included such a feature they would've hidden it all of these years instead of advertising it?

 

[Lutfij]

If you want USB3.0 on the board, you're going to need this card. To be specific, I had to find this thread to locate the part number.