HDMI systems will only operate at 48Gbps if every device in the chain supports the required bandwidth. Even with a DPL Enhanced 48Gbps Reference Standard certified cable, the final format is determined by the least capable device. If the source, display or any in-line equipment do not support the necessary resolution or data rate, the system will negotiate a lower format. Device settings such as colour sampling, bit depth or frame rate can also restrict the output. In most cases, the limitation is elsewhere in the system rather than the cable.