The ACR122U USB NFC Reader is a compact and modern device designed for fast and secure contactless transactions. With its sleek design and durable build, it supports a wide range of NFC applications such as e-payment, transportation, access control, and identity verification. Easy to use and highly compatible across different systems, it’s the ideal choice for reliable everyday NFC solutions.
Why Choose ACR122U?

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The ACR122U USB NFC Reader is the world’s first CCID-compliant contactless smart card reader. Designed for ease of integration and reliable performance, it is compliant with ISO/IEC 18092 (NFC) standards and supports popular cards such as ISO 14443 Type A/B, MIFARE®, and NFC Forum Tag Types 1–4. With a built-in SAM (Secure Access Module) slot, it provides advanced authentication and secure key management. The reader supports data rates of up to 424 kbps and offers a proximity operating distance of up to 50 mm, making it ideal for quick and seamless transactions.
Featuring dual LED indicators and a buzzer, it ensures clear user feedback during operations. As a PC-linked device, the ACR122U is fully compliant with PC/SC and CCID standards and works smoothly with Windows®, Linux®, macOS®, and Android™ platforms. Compact, powerful, and secure, the ACR122U is the go-to solution for industries adopting NFC-based applications.
| Physical Characteristics | |
| Dimensions | 98.0 mm (L) × 65.0 mm (W) × 12.8 mm (H) |
| Weight | 70 g |
| Color | Pearl White |
| USB Host Interface | |
| Protocol | USB CCID |
| Connector Type | Standard Type A |
| Power Source | From USB port |
| Speed | USB Full Speed (12 Mbps) |
| Supply Voltage | 5 V |
| Supply Current | Max. 200 mA |
| Cable Length | 1.0 m, Fixed |
| Contactless Smart Card Interface | |
| Standard | ISO/IEC 18092 NFC, ISO 14443 Type A & B, MIFARE, FeliCa |
| Protocol | ISO 14443 T=CL for ISO 14443-4 compliant cards T=CL Emulation for MIFARE Classic, ISO 18092, FeliCa and NFC Tags |
| Operating Frequency | 13.56 MHz |
| Operating Distance | Up to 50 mm (depending on tag type) |
| Smart Card Read/Write Speed | 106 Kbps, 212 Kbps, 424 Kbps |
| Antenna Size | 50 mm × 40 mm |
| Built-in Peripherals | |
| LED | 1 bi-color: Red and Green |
| Buzzer | Monotone |
| Application Programming Interface | |
| PC-linked Mode | PC/SC, CT-API (through wrapper on top of PC/SC) |
| Operating Conditions | |
| Temperature | 0 °C – 60 °C |
| Humidity | Max. 90% (non-condensing) |
| MTBF | 408,500 hrs |
| Certifications / Compliance | |
| Standards | EN 60950/IEC 60950, ISO 14443, ISO 18092, USB Full Speed, PC/SC, CCID |
| Safety/EMC | CE, FCC, RoHS 2, REACH, VCCI (Japan), KC (Korea), Microsoft WHQL |
| Device Driver OS Support | |
| Windows | CE 5.0, 6.0, Embedded Compact 7, XP, Vista, 7, 8, 8.1, 10, Server 2003/2008/2012/2016 |
| Others | Linux, Mac OS, Solaris, Android 3.1 and later |