The TQR-220B smart card reader by NANOCABLE is an external device with USB 2.0 connection via USB-A connector, designed to offer advanced compatibility with various operating systems such as Windows, Linux, and Mac OS, including the latest versions like macOS Big Sur. This model stands out for its support of smart cards with different voltages (5V, 3V, and 1.8V), especially compatible with the Spanish national ID system DNI 3.0 and the Portuguese identity card, making it a versatile tool for professional environments requiring secure reading and writing of electronic documents. The reader features distinct LED status indicators, with a red LED for power and a green LED to signal read/write activity, enabling intuitive use. It complies with international safety and connectivity standards such as ISO-7816, EMV2 2000 Level 1, CE, FCC, VCCI, CCID, and Microsoft WHQL, ensuring quality and reliability in performance. Its compact and lightweight design, approximately 57x45x70 mm in size and weighing 60 grams, facilitates portability and use in various settings, including an option for phone and smartphone support, expanding its functionality for mobile users. The black finish offers a professional and discreet look, suitable for office devices. Additionally, it requires no driver installation on PC or Mac, simplifying setup and immediate use upon connection. This reader is a practical and efficient solution for managing smart cards in environments where security and multiplatform compatibility are priorities. In short, the TQR-220B combines advanced technology, standards compliance, and ease of use in a compact format ideal for professional and administrative needs.