This device is a Bluetooth NFC Reader that combines the latest 13.56MHz contactless technology with Bluetooth Smart connectivity for on-the-go smart card and NFC applications. The ACR1255U-J1 supports ISO 14443 Type A and B smart cards, MIFARE, and most NFC tag and devices compliant with ISO18092 standard. It has both Bluetooth 4.0 interface for pairing with mobile devices and USB Full Speed for PC-linked operation. Additionally, it can read/write at speeds of up to 424 Kbps for contactless smart card and NFC device access.