The Lineeye LE-650H2 is a hardware-based USB analyzer, which can record a large amount of data on the HDD/SSD of the PC, display translation with each class decode, and measure VBUS power consumption. The analyzer automatically detects the High/Full/Low speed of USB2.0/1.1 and starts measuring by simply pressing the space bar of the PC. The low-cost device of easy operation by connecting it to the USB port of the PC is useful for developing/debugging the firmware/driver and studying the USB standard.