Asrock 939Dual-SATA2 Motherboard Strangeness -- nVidia PCI IDs on C51 (GF61x0+nF4x0)

[Bryan J. Smith]

On Tue, 2005-12-27 at 23:46 -0500, Robert L Cochran wrote:
> Thanks Bryan. I guess I shouldn't have bought the Plextor. I've been 
> wanting faster burn times for a long while now.

Considering the actual, electrical parallel ATAPI interface on the
device probably runs at only UltraDMA mode 2 (Ultra33) or maybe UltraDMA
mode 4 (Ultra66), the SATA only adds overhead.

Until I see the SATA controllers -- and their OS drivers -- implemented
with the full ATAPI command set/registers, you want to stand clear of
SATA ATAPI devices like optical drives.

> As regards the power LED, the case connector is a unitized 3-pin plastic 
> connector meant for a 3 pin header. I'll have to reseat the +5v and GND 
> pins in a new 2-pin connector for this board, right? I guess I'm not 
> about to de-install the motherboard just so I can solder an alternate 
> 3-pin header on it.

I just use the same 3-pin connector regularly, except I move the
appropriate pin to the middle.  I have the exact same ASRock mainboard,
only in the Socket-754 flavor, and that's what I did.

I've also noted the front panel header is the same on all new ASRock,
Foxconn Channel and Gigabyte Socket-754/939 desktop mainboards.
Something like ...

 PWRLED  PWRON
   o  o  o  o  
   o  o  o  o  o
  HDLED  RESET

The speaker is on its own, and a few mainboards then have a 3-pin PWRLED
option separate.


-- 
Bryan J. Smith   mailto:b.j.smith at ieee.org
http://thebs413.blogspot.com
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