I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
connectors were installed, and I'd like to add the missing connectors
plus any needed termination resistors.
Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:

http://farm4.static.flickr.com/3397/...b349938d_o.jpg

What are the values of the missing resistors? I thought that each
pair of SATA data lines needed one 100 ohm resistor between them, but
on this circuit board the resistors seem to be arranged differently.

In article <83981e4a-f306-432c-9e4b-d0ade341f4a2
@y1g2000pra.googlegroups.com>, larry moe 'n curly says...
> I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
> connectors were installed, and I'd like to add the missing connectors
> plus any needed termination resistors.
> Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
>
> http://farm4.static.flickr.com/3397/...b349938d_o.jpg
>
> What are the values of the missing resistors? I thought that each
> pair of SATA data lines needed one 100 ohm resistor between them, but
> on this circuit board the resistors seem to be arranged differently.
>
>
>
You're assuming that the second SATA controller exists to utilize them.

--
Conor

I only please one person per day. Today is not your day. Tomorrow isn't
looking good either. - Scott Adams

On Sat, 10 Jan 2009 06:57:06 -0800 (PST), "larry moe 'n curly"
<(E-Mail Removed)> wrote:

>I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
>connectors were installed, and I'd like to add the missing connectors
>plus any needed termination resistors.
>Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
>
> http://farm4.static.flickr.com/3397/...b349938d_o.jpg
>
>What are the values of the missing resistors? I thought that each
>pair of SATA data lines needed one 100 ohm resistor between them, but
>on this circuit board the resistors seem to be arranged differently.
>

There is usually a bit more to it than simply attaching the SATA
connectors. The BIOS ALSO has to support it, and since THAT MOBO did NOT
have those ports, you will not be able to find a BIOS for that MOBO that
will have those ports in it. SO even with the right parts, the BIOS on
the model MOBO does not support your "need".

After all the hours you would spend, you could SIMPLY go BUY another,
proper motherboard. That is, unless your personal time is only worth
minimum wage. In that case, you will likely fail for other reasons.

My personal time is worth a couple hundred bucks an hour, so if I can
buy it cheaper than spending hours upon hours trying to fudge the ****ing
thing to existence, I'll be spending the cash, and keeping my personal
time for better hobby tasks.

This is an exercise in futility, not to mention a big waste of time,
even if all you needed to install was the connector. Just sourcing the
right part alone might be difficult, since they do NOT all match.

On Sat, 10 Jan 2009 15:07:08 -0000, Conor <(E-Mail Removed)>
wrote:

>In article <83981e4a-f306-432c-9e4b-d0ade341f4a2
>@y1g2000pra.googlegroups.com>, larry moe 'n curly says...
>> I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
>> connectors were installed, and I'd like to add the missing connectors
>> plus any needed termination resistors.
>> Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
>>
>> http://farm4.static.flickr.com/3397/...b349938d_o.jpg
>>
>> What are the values of the missing resistors? I thought that each
>> pair of SATA data lines needed one 100 ohm resistor between them, but
>> on this circuit board the resistors seem to be arranged differently.
>>
>>
>>
>You're assuming that the second SATA controller exists to utilize them.


Even if a chip is in place that has unused ports on it, the MOBO BIOS
will not carry them.

Conor wrote:

> In article <83981e4a-f306-432c-9e4b-d0ade341f4a2
> @y1g2000pra.googlegroups.com>, larry moe 'n curly says...

> > I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
> > connectors were installed, and I'd like to add the missing connectors
> > plus any needed termination resistors.
> > Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
> >
> > http://farm4.static.flickr.com/3397/...b349938d_o.jpg
> >
> > What are the values of the missing resistors? I thought that each
> > pair of SATA data lines needed one 100 ohm resistor between them, but
> > on this circuit board the resistors seem to be arranged differently.
> >
> You're assuming that the second SATA controller exists to utilize them.

Yes, and apparently the NVidia chipset does support additional SATA
devices. I don't know if the BIOS does, and it's possible that a
termination voltage source/sink isn't there fro the extra SATA
connectors.

On Sat, 10 Jan 2009 12:20:56 -0500, Meat Plow <(E-Mail Removed)>
wrote:

>On Sat, 10 Jan 2009 09:06:09 -0800, Archimedes' Lever
><(E-Mail Removed)>wrote:
>
>>On Sat, 10 Jan 2009 06:57:06 -0800 (PST), "larry moe 'n curly"
>><(E-Mail Removed)> wrote:
>>
>>>I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
>>>connectors were installed, and I'd like to add the missing connectors
>>>plus any needed termination resistors.
>>>Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
>>>
>>> http://farm4.static.flickr.com/3397/...b349938d_o.jpg
>>>
>>>What are the values of the missing resistors? I thought that each
>>>pair of SATA data lines needed one 100 ohm resistor between them, but
>>>on this circuit board the resistors seem to be arranged differently.
>>>
>>
>> There is usually a bit more to it than simply attaching the SATA
>>connectors. The BIOS ALSO has to support it, and since THAT MOBO did NOT
>>have those ports, you will not be able to find a BIOS for that MOBO that
>>will have those ports in it. SO even with the right parts, the BIOS on
>>the model MOBO does not support your "need".
>>
>> After all the hours you would spend, you could SIMPLY go BUY another,
>>proper motherboard. That is, unless your personal time is only worth
>>minimum wage. In that case, you will likely fail for other reasons.
>>
>> My personal time is worth a couple hundred bucks an hour, so if I can
>>buy it cheaper than spending hours upon hours trying to fudge the ****ing
>>thing to existence, I'll be spending the cash, and keeping my personal
>>time for better hobby tasks.
>>
>> This is an exercise in futility, not to mention a big waste of time,
>>even if all you needed to install was the connector. Just sourcing the
>>right part alone might be difficult, since they do NOT all match.
>
>If the OP is LUCKY he can research this and maybe find another who has
>successfully done this. But I doubt this will be the case. I've
>modified a SATA mobo to have RAID ports where non existed in the stock
>BIOS by flashing a BIOS with RAID support. However the hardware was
>already on the board.


Oh yeah sure, PlowTard. You've just done ****ing everything.

Making **** up as you go along makes you even more transparent than you
already were.

Archimedes' Lever wrote:

> On Sat, 10 Jan 2009 06:57:06 -0800 (PST), "larry moe 'n curly"
> <(E-Mail Removed)> wrote:
>
> >I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
> >connectors were installed, and I'd like to add the missing connectors
> >plus any needed termination resistors.
> >Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
> >
> > http://farm4.static.flickr.com/3397/...b349938d_o.jpg
> >
> >What are the values of the missing resistors? I thought that each
> >pair of SATA data lines needed one 100 ohm resistor between them, but
> >on this circuit board the resistors seem to be arranged differently.
>
> There is usually a bit more to it than simply attaching the SATA
> connectors. The BIOS ALSO has to support it, and since THAT MOBO did NOT
> have those ports, you will not be able to find a BIOS for that MOBO that
> will have those ports in it. SO even with the right parts, the BIOS on
> the model MOBO does not support your "need".
>
> After all the hours you would spend,

Hours??? Similar mods in the past took me 20 minutes, including the
time to desolder the parts from a junked mobo.

> you could SIMPLY go BUY another, proper motherboard.

That would entail a 500' walk to Fry's Electronics.

> That is, unless your personal time is only worth
> minimum wage. In that case, you will likely fail for other reasons.
>
> My personal time is worth a couple hundred bucks an hour,

If I got paid that much, I'd also take hours to do this job.

> This is an exercise in futility, not to mention a big waste of time,
> even if all you needed to install was the connector. Just sourcing the
> right part alone might be difficult, since they do NOT all match.

I don't see any problem except possibly an active termination voltage
regulator, but because differential signals are involved, I assume
that only ordinary resistors are used.

Just curious: How many times have you done mods like this?

Archimedes' Lever wrote:
>
> On Sat, 10 Jan 2009 12:20:56 -0500, Meat Plow <(E-Mail Removed)>
> wrote:
>
> After all the hours you would spend, you could SIMPLY go BUY another,
> proper motherboard. That is, unless your personal time is only worth
> minimum wage. In that case, you will likely fail for other reasons.
>
> My personal time is worth a couple hundred bucks an hour, so if I can
> buy it cheaper than spending hours upon hours trying to fudge the ****ing
> thing to existence, I'll be spending the cash, and keeping my personal
> time for better hobby tasks.
>
> > If the OP is LUCKY he can research this and maybe find another who has
> > successfully done this. But I doubt this will be the case. I've
> > modified a SATA mobo to have RAID ports where non existed in the stock
> > BIOS by flashing a BIOS with RAID support. However the hardware was
> > already on the board.
>
> Oh yeah sure, PlowTard. You've just done ****ing everything.
>
> Making **** up as you go along makes you even more transparent than you
> already were.

For some reason, I no longer believe that your time is worth a couple
hundred $$$ an hour.

On Sat, 10 Jan 2009 06:57:06 -0800 (PST), "larry moe 'n curly"
<(E-Mail Removed)> put finger to keyboard and composed:

>I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
>connectors were installed, and I'd like to add the missing connectors
>plus any needed termination resistors.
>Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
>
> http://farm4.static.flickr.com/3397/...b349938d_o.jpg
>
>What are the values of the missing resistors? I thought that each
>pair of SATA data lines needed one 100 ohm resistor between them, but
>on this circuit board the resistors seem to be arranged differently.

The "resistors" at the SATA4 connector appear to be labelled as
C151-4. This begs the question, what are caps doing on a high speed
interface?

This URL talks about 100 ohm termination resistors across the two
signal pairs:
http://www.interfacebus.com/Design_C...erial_ATA.html

This URL suggests that 20K pullup and pulldown resistors may sometimes
be used in noisy environments:
http://www.interfacebus.com/Design_Connector_RS644.html

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

On Sat, 10 Jan 2009 09:52:10 -0800 (PST), "larry moe 'n curly"
<(E-Mail Removed)> put finger to keyboard and composed:

>
>
>Conor wrote:
>
>> In article <83981e4a-f306-432c-9e4b-d0ade341f4a2
>> @y1g2000pra.googlegroups.com>, larry moe 'n curly says...
>
>> > I have some motherboards designed for 4-6 SATA ports, but only 2 SATA
>> > connectors were installed, and I'd like to add the missing connectors
>> > plus any needed termination resistors.
>> > Here's an example with an ECS GeForce 6100SM-M v. 1.0 motherboard:
>> >
>> > http://farm4.static.flickr.com/3397/...b349938d_o.jpg
>> >
>> > What are the values of the missing resistors? I thought that each
>> > pair of SATA data lines needed one 100 ohm resistor between them, but
>> > on this circuit board the resistors seem to be arranged differently.
>> >
>> You're assuming that the second SATA controller exists to utilize them.
>
>Yes, and apparently the NVidia chipset does support additional SATA
>devices. I don't know if the BIOS does, and it's possible that a
>termination voltage source/sink isn't there fro the extra SATA
>connectors.

There exist utilities (eg AMIBCP) that can enable hidden features in
your BIOS. It could be that your additional SATA ports are supported,
but they may have been turned off by default.

For example, count the "not active" features in this AMI BIOS:
http://www.users.on.net/~fzabkar/340S8/BIOSNOTV.RPT

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.