[fedora-arm] Multiport sata card

[Robert Moskowitz]

On 09/08/2015 03:38 PM, Gordan Bobic wrote:
> On 08/09/15 19:19, Robert Moskowitz wrote:
>> I finally ordered and received a multiport sata card for use on my
>> cubietruck:
>>
>> http://www.ebay.com/itm/SATA-2-0-Port-Multiplier-Card-1-To-5-Port-SATA-Card-SATAII-Riser-card-/151747062952?hash=item2354d46ca8 
>>
>>
>>
>>  From past emails I learned this is supported, but now how to wire up a
>> couple 2.5" (notebook) sata drives.  The questions are:
>>
>> What is that white connector for?
>
> It's a power connector. You need to attach a floppy type power input 
> to it.

Ah, yes, it IS the same connector.  But is this in addition to or 
instead of the USB power connector?

>
>> How can I power ths card so when the CT is off it is off?
>
> By powering both using a separate modified AT/ATX style PSU?

One option.

>
>> And most importantly, how do I power the drives?  The CT comes with a
>> single sata cable taking power for the drive from the board. Now I to
>> learn how to wire this all differently.
>
> Are you sure it provides power on eSATA? The vast majority of devices 
> that provide eSATA capability don't supply +5V over eSATA (+12V is not 
> in eSATA spec at all) and require a separate +5V to be supplied via, 
> e.g. USB.

The CT has a special connnector that directly powers the eSATA.  I have 
one in production working that way and another here on my test bench.  
No problem powering a 1A 2.5" 1TB notebook drive.

> Either way, the port multiplier won't take power from eSATA, so you 
> will need a separate PSU to provide power for the PMP and the disks at 
> the very least.

It is definitely not wired to power them as the CT is.

>
> Gordan
>