USB Full Speed Interface: Experience the functionality of the ACR122U with its compact size and diverse features for applications like payment, access control, time and attendance, and transportation. Built-in Antenna: Features a built-in antenna for contactless tag access, with a card reading distance of up to 50mm (depending on tag type). Wide Compatibility: Supports ISO 14443 Part 4 Type A and B cards, IC Classic, FeliCa, and all four types of NFC (ISO/IEC 18092 tags). ACR122U Contactless Reader/Writer: This PC-connected contactless smart card reader/writer is developed using 13.56 MHz contactless technology. High-Speed Performance: Utilizing up to 424 Kbps for NFC tag access and up to 12 Mbps for USB full speed, the ACR122U efficiently reads from and writes to various contactless cards/tags. It's also PC/compatible, enabling interoperability with different applications and platforms. Color: White Material: Plastic Package Contents: 1 * Replicator 5 * Keys 5 * Cards