Kingda B00623 is a PCI-E expansion card for a desktop computer, adding two external RS232/COM ports for equipment that connects through this serial standard. The listed chipset is Moschip 9922.
Use the card when a desktop system needs serial connections alongside its existing interfaces. Both ports use RS232/COM, providing two connections for compatible equipment. Install the controller in a PCI-E slot to add these ports to the computer.
The listing identifies it as a desktop PC controller. It does not specify supported operating systems or particular peripheral models, so check those requirements for your setup.