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On 03.02.2019 23:02, Pascal Hambourg
wrote:
Le
03/02/2019 à 11:22, Alexander V. Makartsev a écrit :
On 03.02.2019 15:01, Pascal Hambourg
wrote:
Le 03/02/2019 à 10:10, Curt a écrit :
On 2019-02-03, local10
<local10@tutanota.com> wrote:
You may want to consider buying an USB HDD
enclosure/cradle, like this
one[1] for example, they are cheap and would allow you to
use a
regular internal HDD as a USB drive.
Note that this solution may require an external power supply.
It won't be necessary for 2.5" hard drives. Only 3.5" hard
drives
require +12V DC to function, which USB interface can not
provide.
Some 2,5" drives require more current than the 500 mA a USB 2.0
host port can provide. Looking at my own, I read 800 mA, 1100 mA,
580 mA, 451 mA. So only one of them is below 500 mA.
Turns out you are right. Modern 2.5" HDDs are made to be more
demanding, according to hardware specs available on web sites of WD
and Seagate. Only exception are 2.5" L200 series drives from
Toshiba. They require <500mA to operate.
Some years ago that wasn't the case, because I still use 250Gb and
120Gb Seagate HDDs with 2.5" USB2.0 disk enclosure, so I assume WD
and Seagate did that on purpose to make their external hard drive
enclosures viable. *sigh*
I think it won't be cost-effective to make
an
entirely new custom PCB for a hard drive that will have both
SATA and
USB controllers on-board.
The PCB can be the same, but it can be equipped with only the
controller, PHY and connector required for the destination.
No need for an adapter PCB, controller and connectors in the
enclosure. Less parts = less assembly cost.
Can you name a make\model, so I can avoid and don't recommend them,
because this alone makes them a solid no-no, because if / once they
fail you won't be able to recover data from them without specialized
data recovery hardware.
--
With kindest regards, Alexander.
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