[Thermaltake Versa H23 Question]

Hi! So it's my first time building my own pc and I recently bought a versa h23 as my pc case. I have justone question about the case HDD Led. Is it normal when my HDD activity is very minimal (about 30% below activity) the case HDD LED is very dim and I really cant see it lighting up at this instance. Does my HDD needs to get heavy loads to get the LED light up completely?.

Although the whole system is fine, I just want to make sure everything is fine. I already checked the cables and the polarity connection through the mobo.