From: nospam.Dr..What@f201.n342.z1.fidonet.org   
      
   -=> The Natural Philosopher wrote to All <=-   
      
    TNP> And I think I can confirm that a Pi4 cannot drive three SSDs over USB   
    TNP> unaided.   
      
   I found that out a long time ago when I set up my Raspberry PI4 based NAS.   
      
    TNP> My tentative conclusion, which I would like some opinion on, is that it   
    TNP> is the USB power limit that is causing the problems, not the overall   
    TNP> power draw. As that would have bee relieved by removing the TV hat.   
      
   It's the power draw.   
      
   On other Pi projects, I used multiple flash drives and had no problems.   
      
   But my NAS project used 2.5" SATA drives with SATA-to-USB adapters - which will   
   certainly draw more power.  And I couldn't get more than one to work directly   
   connected.  I ended up getting a powered USB hub for all 4 drives in my NAS.   
      
      
   ... I tried to drown my sorrows, but they can swim.   
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