Want to watch ultra HD video content naturally first need to ensure that the storage device can be read smoothly, want to watch 4K movies must use USB3.0, USB3.0 is the new USB specification, the specification is initiated by Intel and other companies. The maximum transmission bandwidth of USB 3.0 is up to 5.0Gbps(640MB\/s), which is about ten times that of USB 2.0 (USB 2.0 is about 60MB\/s). If you want to watch ultra-high-definition video content, naturally, you first need to ensure that the storage device can be read smoothly and without a delay, so at present, only 4K TVS configured with USB 3.0 interfaces can normally play 4K source content.
However, we should note that this is the theoretical transmission value, if several devices share a USB channel, the main control chip will allocate and control the bandwidth at the disposal of each device. For example, in USB1.1, all devices can only share 1.5MB\/s of bandwidth. If a single device occupies all the bandwidth of the USB interface, it will bring difficulties to the use of other devices.
7200 RPM
The hard disk speed required for editing 4k: an ordinary mechanical hard disk, the speed is generally 100MB\/s, and the lower can only reach 30MB\/S. The transmission speed required for editing 4K footage is 400M\/S, so the array speed needs to be increased, and the array speed can reach 420MB\/s with RAID5.