ZK Biometric Fingerprint Attendance Time Clock+ WIFI +TCP/IP +USB, ZKSoftware Brand Note: Recommended windows 7, XP, vista, (not recommended window 8,10, the system may be unstable),New Biometric Fingerprint Attendance Time Clock WiFi + TCP/IP + USB + Elegant design, Brand New Linux Operating System+Wifi +TCP/IP+High-quality+Elegant design! offering unparalleled performance with an advanced algorithm for reliability, precision and excellent matching speed. The U160-C features the fastest commercial-based fingerprint matching algorithm and ZK high-performance, high-image quality optical fingerprint sensor.