Quantis QRNG USB by ID Quantique is a certified USB Quantum Random Number Generation module providing true randomness since 2001. It has a 4 Mbps entropy data rate, live monitoring, and a failure detection mechanism. It offers scaling options and configurable random extraction. As computers are deterministic, they cannot produce truly random numbers. A physical source of randomness is required, and quantum physics is intrinsically random. Quantis QRNG USB is a physical random number generator that exploits an elementary quantum optics process. Quantum random number generators are invulnerable to environmental perturbations and allow live status verification. The operation of Quantis QRNG USB is continuously monitored, and if a failure is detected, the random bit stream is immediately disabled. Quantis QRNG USB provides full entropy (randomness) from the first photon. Released in 2001 and certified for high entropy testing, Quantis QRNG USB delivers true randomness at rates up to 4 Mbps. This hardware RNG is compatible with most platforms and integrates easily into existing applications. Quantis QRNG USB modules come with Quantis Software, which includes drivers for common operating systems, random data scaling, randomness extraction, and a graphical interface for reading, displaying, and storing random numbers. A library for easy access and a demonstration application are also provided. The simplicity of Quantis QRNG USB allows for straightforward certification due to the well-understood quantum mechanical processes. Quantis QRNG USB is the most certified true RNG in the market, certified by institutions like CTL and METAS. It has passed NIST SP800-22, SP800-90B, and Dieharder statistical tests, making it the most trusted RNG. AIS31 validated product versions include a dedicated AIS31 version of USB-4M using specific AIS31 PTG3.0 compliant post-processing tested and validated by French ANSSI.