DFI Nf4 Ultra-D com port header

THis is a grea motherboard, but for some reason, they didn't put the com port on the I/O header, but left it to the users to find a rear panel connector to plug into it. It's a 9 PIN header. Does anyone know where I can find such a header? DFI says it's optional but I can't find anyone with one to sell me.

Thanks,
Mike