The PC-KCA110 uses iris recognition technology to authenticate users. It relies on precise driver software to communicate with Windows operating systems. Without the correct driver, the system will flag the camera as an "Unknown Device" in Device Manager. Technical Specifications : Biometric Iris Scanner Interface : USB 2.0 / 3.0
/pub/drivers/legacy/hitachi/kca_series/
Ensure the physical interface cable is fully seated. If using an interface card (such as a PCI or PCMCIA card associated with the unit), ensure it is firmly slotted into the motherboard. hitachi pc-kca110 driver