A. Dumas wrote:
> Roby wrote, on 27-03-2019 09:28:
>> A. Dumas wrote:
>>> I got a Seagate 1TB external 2.5" hdd for ¤50, usb-powered by the 3B+ Pi
>>> without problem, that's with the RPi official 2.5A adapter. WD is fine,
>>> too, I'm sure (or some will say better). You can set "max_usb_current=1"
>>> in
>>> /boot/config.txt to double the available power via usb, but that wasn't
>>> necessary for me.
>>
>> [...]
>> Did I misunderstand or did you connect your Seagate 1TB directly to one of
>> the RPI's USB ports ??
>> I don't understand your phrase: "usb-powered by the 3B + Pi
>> without problem"
>> What is '3B + Pi' ?  It is a USB-SATA adapter with independent external
>> power supply ?
>
> Dude. I have:
> 1x RPi official power adapter, rated at 2.5 A.
> 1x RPi 3 model B+ (a.k.a. 3B+), see
> https://www.raspberrypi.org/products/raspberry-pi-3-model-b-plus/
> 1x Seagate "Backup Plus" 2.5in portable HDD, with a USB connection.
>
> NOTHING MORE. NO SEPARATE POWER ADAPTER FOR THE HARD DISK. I wanted to write
> bus-powered but thought usb-powered was clearer. I guess not :(
>
> ***Apparently*** the standard current available from the RPi3 usb ports is
> enough for my hdd, and my guess is it's enough for most 2.5" portable drives.

All clear !
Thanks again

--
Roby

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