In building out my AOpen AP43 system, I ran across numerous PCI cards with universal keying that were just ignored by my 5v only PCI slots.

It is possible that SATA card only works on 3.3v even if the card is keyed universal. The DFI may only be wired up for 5v where the Intel has both voltages to the slots.

Many Bothans wrote on 2024-08-28, 02:17:

In building out my AOpen AP43 system, I ran across numerous PCI cards with universal keying that were just ignored by my 5v only PCI slots.

It is possible that SATA card only works on 3.3v even if the card is keyed universal. The DFI may only be wired up for 5v where the Intel has both voltages to the slots.

it has 2 notches and the rear part of the card is missing like 4 pins in each side

Many Bothans wrote on 2024-08-28, 02:17:

It is possible that SATA card only works on 3.3v even if the card is keyed universal. The DFI may only be wired up for 5v where the Intel has both voltages to the slots.

yep, ST-LAB A390

Near the bracket there is no regulator U2 from 5V to 3.3

shevalier wrote on 2024-08-28, 05:46:

yep, ST-LAB A390 https://ireland.apollo.olxcdn.com/v1/files/dlzoiikvvusu-UA/image;s=1000x700 Near the bracket there is no regula […]
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Many Bothans wrote on 2024-08-28, 02:17:

It is possible that SATA card only works on 3.3v even if the card is keyed universal. The DFI may only be wired up for 5v where the Intel has both voltages to the slots.

yep, ST-LAB A390

Near the bracket there is no regulator U2 from 5V to 3.3

mine is a SWEEX PU102
next to the bracket it looks as if its missing a cap and some 8 pin chip

TheFriedLemon wrote on 2024-08-28, 06:47:

shevalier wrote on 2024-08-28, 05:46:

yep, ST-LAB A390 https://ireland.apollo.olxcdn.com/v1/files/dlzoiikvvusu-UA/image;s=1000x700 Near the bracket there is no regula […]
Show full quote

Many Bothans wrote on 2024-08-28, 02:17:

It is possible that SATA card only works on 3.3v even if the card is keyed universal. The DFI may only be wired up for 5v where the Intel has both voltages to the slots.

yep, ST-LAB A390

Near the bracket there is no regulator U2 from 5V to 3.3

mine is a SWEEX PU102
next to the bracket it looks as if its missing a cap and some 8 pin chip

oh well, its missing a regulator too, its just hidden under a sticker

could some regulator be soldered on, if yes what type and size?

thats what mine already has on it

For 5v operation, Its mast be looking like that's

shevalier wrote on 2024-08-28, 07:45:

For 5v operation, Its mast be looking like that's

what are the markings on the second regulator and capacitor?

TheFriedLemon wrote on 2024-08-28, 08:23:

shevalier wrote on 2024-08-28, 07:45:

For 5v operation, Its mast be looking like that's

what are the markings on the second regulator and capacitor?

1117-3.3 (fixed 3.3v) from any manufacturer (AMS/AMC/NCP/TI/etc)
electrolityc cap - 22-100uF * 10-25V general use

shevalier wrote on 2024-08-28, 10:16:

TheFriedLemon wrote on 2024-08-28, 08:23:

shevalier wrote on 2024-08-28, 07:45:

For 5v operation, Its mast be looking like that's

what are the markings on the second regulator and capacitor?

1117-3.3 (fixed 3.3v) from any manufacturer (AMS/AMC/NCP/TI/etc)
electrolityc cap - 22-100uF * 10-25V general use

mine has a second cap in the left of the one you said should be moved

TheFriedLemon wrote on 2024-08-28, 10:27:

shevalier wrote on 2024-08-28, 10:16:

TheFriedLemon wrote on 2024-08-28, 08:23:

what are the markings on the second regulator and capacitor?

1117-3.3 (fixed 3.3v) from any manufacturer (AMS/AMC/NCP/TI/etc)
electrolityc cap - 22-100uF * 10-25V general use

mine has a second cap in the left of the one you said should be moved

I did this a long time ago, I forgot that 1 capacitor is not enough.
Specifically C15 - between the regulators

Capacitor C7 can be left untouched; if you add a regulator, its function becomes redundant.
Requires 2 electrolytic capacitors.
From the PCI bus +5V at the input of the 3.3V regulator
From the output of the regulator 3.3V, the same capacitor will then be at the input of the Vcore regulator (as far as I remember, 1.8V)

When setting the fixed regulator to 3.3V, resistor RY2 must either be shorted with solder, or the 0 resistor (0603 size) must be set.

Resistor L3 (ferrite bead was expensive, so there is a 0 ohm resistor there) must be removed because it is switching a 3.3V power supply
Either from the bus or from the regulator.

C14 and c16 - X5R/X7R 0.1u 10 V, type - 0603.
If your soldering skills are not very good, it is better not to try to solder them. Its are for perfectionism.

So all i have to do is:
- Remove the resistor from RY2 and short that connection
- Remove L3
- Move C7 to C13
- Move C37 to C15
- Add a 1117-3.3 regulator in U2

TheFriedLemon wrote on 2024-08-29, 03:00:

So all i have to do is: - Remove the resistor from RY2 and short that connection - Remove L3 - Move C7 to C13 - Move C37 to C15 […]
Show full quote

So all i have to do is:
- Remove the resistor from RY2 and short that connection
- Remove L3
- Move C7 to C13
- Move C37 to C15
- Add a 1117-3.3 regulator in U2

- RY2 is empty pads, nothing to remove
- Add C15 22~100u*10~25v electrolytic capacitor

shevalier wrote on 2024-08-29, 03:18:

TheFriedLemon wrote on 2024-08-29, 03:00:

So all i have to do is: - Remove the resistor from RY2 and short that connection - Remove L3 - Move C7 to C13 - Move C37 to C15 […]
Show full quote

So all i have to do is:
- Remove the resistor from RY2 and short that connection
- Remove L3
- Move C7 to C13
- Move C37 to C15
- Add a 1117-3.3 regulator in U2

- RY2 is empty pads, nothing to remove
- Add C15 22~100u*10~25v electrolytic capacitor

so, i dont touch c37?

cause it has a cap on mine

TheFriedLemon wrote on 2024-08-29, 03:59:

shevalier wrote on 2024-08-29, 03:18:

TheFriedLemon wrote on 2024-08-29, 03:00:

So all i have to do is: - Remove the resistor from RY2 and short that connection - Remove L3 - Move C7 to C13 - Move C37 to C15 […]
Show full quote

So all i have to do is:
- Remove the resistor from RY2 and short that connection
- Remove L3
- Move C7 to C13
- Move C37 to C15
- Add a 1117-3.3 regulator in U2

- RY2 is empty pads, nothing to remove
- Add C15 22~100u*10~25v electrolytic capacitor

so, i dont touch c37?

No, its Sil3512 Vcore =1.8V

TheFriedLemon wrote on 2024-08-29, 04:00:

cause it has a cap on mine

That's why I replaced it with MLCC 47u*6.3V
But this, again, is perfectionism.
If there is absolutely nothing to do, you can put polymer capacitors there, such as 10u*6.3V.
These are often located near the audio codec on motherboards from 10 years ago.

Re: Audigy 2 ZS Crackle Fix
See pic around 1117 regulator