my NTFS external HDD, not seen by desktop, but is by laptop

[Jeffrey Walton]

On Sun, Mar 16, 2025 at 6:48 AM Nils Kassube via ubuntu-users
<ubuntu-users at lists.ubuntu.com> wrote:
>
> On 16.03.25 Stephen Constantinou via ubuntu-users wrote:
> > I went back to the PC.  The rear of which has many USB slots.  I
> > attached it to several other slots (which I think are USB 2) and it worked.
> >
> > The lesson is not to assume that all USB slots work.  That same slot
> > will see my memory stick but not this power hungry large HDD.
>
> You can find out if it is USB2 or USB3 if you look at the colour of the slot, USB3 is marked blue. This picture <https://en.wikipedia.org/wiki/USB_3.0#/media/File:Lenovo_x220.jpg> shows a USB2 port on the right and a USB3 port on the left. I don't think there are memory sticks which really need the power of USB3, only the higher speed gives an adavantage if you use a USB3 port instead of USB2.

The USB specification does not provide standard port colors. Each
manufacturer is free to choose which color to make their ports.

Jeff