The manufacturer Naspec released a high-end HDMI 2.1 cable with a built-in LED display that can display information about the transmitted signal.
The series of HDMI cables are described as “Ultra Pro 3” and support 48Gbps full-speed transmission. The length of this series of HDMI cables includes 1.5m, 2m, 3m, 5m, 10m, 15m and 20m, and the price starts from 30800 yen (currently about 1623 RMB). In addition, the series of HDMI cables support high resistance to EMI (electromagnetic interference) and RFI (radio frequency interference).
The series of HDMI cables are equipped with a small LED display that allows you to check whether the currently transmitted signal is in TMDS mode or FRL mode, in addition to a lighting function on the display side of the plug, making it easy for users to connect in dark places.