What equipment is used to save the camera video directly to a USB flash drive or a mobile hard disk?

At present, the more convenient method is to use video cassette, which is similar to the principle of acquisition card, but you can use power supply instead of computer, then connect the camera and insert mobile storage devices such as USB flash drive. One-click recording can be recorded directly into the computer. It's fast and convenient, and some have the function of a player. If you connect the monitor through the HDMI ring interface, the video inside can be played directly with the remote control. For example, T960 recording box can be realized.