392414-001 serial port adapter kit

I bought a HP workstation Z230 two months back. There i used 2 Camera cards in mother board but there is no default RS232 serial port. Now i want to add RS232 port instead of card.

I already asked HP customer support and they suggested 392414-001 serial port adapter kit. please any one help me to where i can buy.

Thanks

Suresh

Precious Microtech

Chennai