On Tue, Sep 8, 2015 at 8:44 PM, Robert Moskowitz <rgm@xxxxxxxxxxxxxxx> wrote: > > > 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. It isn't a eSATA connector, it's a plain vanilla internal SATA connector with a power supply connector with enough power to drive a 2.5 inch 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. You need to power the SATA board and any extra disks separately from the Cubietruck, or if you must power everything from a single PSU you'll just need to ensure the PSU has a 5v supply to power the CT too. Peter _______________________________________________ arm mailing list arm@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/arm
