Active 4-Port USB2.0 Hub drawing Circuit with individually. Ports + power supply

This 4-port active hub in each case a switch to cut off the maximum of four devices to be connected / HDD is recommended by my pers. Allerbestens experiences further.
Have four mobile external hard drives (2.5 ") connected to the above type HUB and this in turn connected via a media player with a Full HD TV.
Absolutely clean and smooth playback of media content of the four connected hard drives.
Angeschl Clean Access up to 4. FP due to the external power supply to the HUB's.
Because the hub or any individual connected to it is switched off selectively hard disk is also the respective selectively angeschl. FP without power and running when not in use with not necessarily that easy on the respective disk drives and power costs minimized.