The Aardvark adapter, Beagle analyzer, Cheetah adapter, and Komodo interface use the USB interface to communicate with the host PC. The Aardvark adapter and Komodo interface are full-speed USB devices and require a host controller that is at least USB 1.1 compliant. The Beagle I2C/SPI analyzer, Beagle 12 analyzer, Beagle 480 analyzer, Beagle 5000 analyzer, and Cheetah adapter are high-speed USB devices and require a host controller that is at least USB 2.0 compliant. Optionally, the Beagle 5000 analyzer can operate as a SuperSpeed USB device, but this requires a host controller that is USB 3.0 compliant.