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ADT-Link R43SF power supply help  

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billythemenace2
(@billythemenace2)
New Member
Joined: 12 months ago
 

Hi guys, Im doing a project where I'm turning an old laptop into a desktop pc.

I am using the ADT-Link R43SF for the graphics card and have got it all working using a ATX psu. I want this pc to be small so I looked into using DELL DA-2 8PIN 12v 220w power supply. This is fine for the gpu 6pin power supply as they are 12v as well but the R43SF adaptor uses a 4 pin floppy connector. The sata to 4pin that came with the adaptor has a yellow and red red wire on it that normally means 12v and 5v. Would it dangerous to use a 12v to 5v convert or is there any other options of power both gpu 12v and the adaptors 5v without using a ATX psu.

 

Thanks in advance

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

@billythemenace2

It only uses 12V from the floppy. Look up PCIe on wikipedia, it shows that a PCIe slot provides 12V and 3.3V. The R43SF has no components to get 3.3V from 5V or 12V, therefore 3.3V must come from the M.2 connection.

Here's an example using a 12V only power supply:
https://egpu.io/forums/which-gear-should-i-buy/thunderbolt-3-external-drive-slot-m-2-ngff-adapter/paged/2/#post-67635

 

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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Simon Jansen
(@simon_jansen)
New Member
Joined: 2 months ago
 

Hi,

I bought recently and Dell DA-2 and a R43SL to power a eGPU.

Is there a way to power the 4-pin floppy power cable (berg connector) with the Dell DA-2?

Since the Dell DA-2 only powers 12v and not 5v which is required for the 4-pin berg connector, I'm not sure if this is possible.

Regards,

Simon

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

@simon_jansen, PCIe uses 3.3V and 12V. The R43SL does not have a voltage regulator so it means that 3.3V is coming from the M.2 slot. 5V is not used anywhere in that case. So all you have to do is connect 12V and ground to the floppy power connector.

Examples of adapters that use 5.5V to make 3.3V:
https://www.amazon.com/dp/B07VT1XY77
https://www.microsatacables.com/catalog/product/view/id/1783

 

 

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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