There is no difference between rgbin and hdmi.

Powder metallurgy bearings are made by pressing, sintering, shaping and oil-immersing metal powder and other anti-friction material powders. They have a porous structure. After being soaked in hot oil, the pores are filled with lubricating oil and work. At this time, due to the suction effect and frictional heating of the journal rotation, the metal and oil are heated and expanded, and the oil is squeezed out of the pores, and then the friction surface lubricates. After the bearing cools, the oil is sucked back into the pores.

rgbin generally refers to the rgb display interface, including VGA, HDMI, and dvi interfaces. It represents the video interface for input of the three primary colors of red, green, and blue. The concept is broader. HDMI is a high-definition multimedia interface that can transmit audio synchronously. Video signal, the former contains the latter to some extent.