Note: #1. No software provided. You have to get a third-party application/software to work with it by yourself. It is professional hardware. If you are not familiar with it, don't buy. #2. It works for frequency 13.56MHz only. It doesn't work for other frequencies. ETEKJOY ACR122U NFC RFID Contactless Smart Card Reader Writer w/ USB Cable, SDK, 5x Writable IC Card The ACR122U is a PC-linked Contactless Smart Card Reader/Writer developed on the 13.56MHz Contactless Technology. It is the world's first CCID-compliant contactless card reader writer that follows both ISO 14443 and ISO 18092. It is designed to support not only MiFare and ISO 14443 Type A and B cards but also FeliCa and NFC tags. By making use of high-speed card access and full USB speed of 12 Mbps, Read & Write operations are faster and more efficient. The ACR122U NFC Reader is also PCSC compliant for ISO 1443 tags and MiFare cards. With its compact size and trendy design and with various features, you can experience the convenience in using ACR122U for applications of payment, NFC mobile tag, access control, time attendance and so on. ACR122U is truly the smart card peripheral for your contactless application. Features: * Operating Frequency: 13.56MHz * Interface: USB full speed * Power Supply: direct USB (5V DC) * CCID Standard, PSCS Compliant * Read / Write Speed up to 424kbps * ISO/IEC 18092 (NFC) and FeliCa Tag Support * ISO14443 Type A and B and MiFare card support * Bi-Color LED * Compact size: 98mm(L) x 65mm(W) x 12.8mm(H) * Net Weight: 70g Package includes: 1x ACR122U reader 1x Mini CD (SDK, Driver Installer, Sample Codes, User Manual) 5x Writable IC cards.

Support new Mifare Ultralight C (via pseudo APDUs) and Mifare Plus SL1 (4 Byte UID, via pseudo APDUS) and SL3. Frequency: 13.56MHz. Support ISO 14443 Type A and B, Mifare, FeliCa, and all 4 types of NFC (ISO/IEC 18092) tags. Read/write speed up to 424 kbps. Card reading distance of up to 50 mm (depending on tag type). USB interface. CCID standard. PCSC compliant. #1. No software provided. You have to get a third-party application/software to work with it by yourself. It is professional hardware. If you are not familiar with it, don't buy. #2. It works for frequency 13.56MHz only. It doesn't work for other frequencies.