From: daniel@me.invalid   
      
   On 09/10/2025 16:42, Mike Scott wrote:   
   > I've just installed rasp OS on a new pi5 for the first time. It moans   
   > the psu is insufficient, and can't deliver 5A. But the psu itself - a   
   > kosher raspberry pi one - claims it will deliver 5A/25W.   
      
   That doesn't sound right.   
      
   Raspberry Pi sell three different USB-C PSUs:   
      
   - A 15W PSU for use with the Pi 4/400 only.   
   - A 27W PSU for use with the Pi5/500 (and 4/400)   
   - A 45W PSU which is like the 27W but more powerful and can power some   
   laptops, etc.   
      
   The 27W and 45W PSUs support the USB Power Delivery spec and will   
   provide a range of powers/voltages after negotiation with the device.   
   The 15W PSU provides only 5V/3A, and is stated to be inadequate for the   
   Pi5 and later.   
      
   There is no official "kosher" 25W PSU from Raspberry Pi.   
      
   --   
   Cheers,   
     Daniel.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)