Arduino Pro Micro not recognised by computer or showing up in

Hi fokes, My Arduino Pro Micro arrived today and whenever I plug it in to the computer (win 10 x64) it isn't detected by ports or anything. The green light is always on indicating power, but the left red light (looking at it from the side of the micro USB input) does not light up. In total i ordered 5 of them and they are all having the same issue. Can someone tell me what's happening? Have I broken it all ready? Also i have a few Unos r3 versions and not having issues with those.

Arduino Pro Micro Atmega32u4 16mhz 5v Leonardo

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