Notifications
Clear all

US$3 Dell DA-2 to PCIe output splitter  

 of  2
  RSS

nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

The 220W Dell DA-2 is a common and affordable fanless eGPU power source used to drive many mPCIe/EC and mini AKiTiO eGPU adapter/enclosure solutions. As few enclosures have a Dell DA-2 8-pin input port, in this topic we show how with ~US$3 of parts, a Dell DA-2 PSU output plug can be split into 3xPCIe outputs for standalone use or to be further customized. This is done without the use of any soldering.

 

Required parts

 

 

Instructions

 

1. Attach a PCIe splitter to the Dell DA-2 8-pin plug to create 2x PCIe plugs

 


Using a little force on these unkeyed parts,  attach the female 6P or 8P PCIe splitter plug with the male 8-pin Dell DA-2 output so:

  • PCIe splitter black wires attach to the GND pins (1, 3, 5 on DA-2)
  • PCIe splitter yellow wires attach to the 12V pins (2, 4, 6 on DA-2)

 

 

 

!! warning !! ensure your PCIe splitter does not connect to the leftmost Dell DA-2 REMOTE and SENSE pins shown above. Doing so may damage any attached video card/ eGPU adapter due to a shortcircuit.

 


 

 

2. Attach the second PCIe splitter to one of the male jacks on the first PCIe splitter to create 3xPCIe outputs

 

   

 

Above: 2x6P PCIe splitters attached to a Dell DA-2. Here the user modified one output plug to be a molex, which we won't do in this topic.

 

3. Turn on the Dell DA-2 by jumpering REMOTE+GND

 

Attach a split pin or opened paperclip between the REMOTE and the adjacent GND pin. Then the Dell DA-2 PSU LED will change from STANDBY (orange LED) mode to ACTIVE (green LED).  Examples shown below:

 

 It is a good idea to apply electrical tape (or at least cellophane tape) around this to hold it in place to prevent any accidental shorting with the nearby 12V pins.

 

Q: What if I need a 5.5x2.5mm DC barrel connector . . . 

Like used to supply power to AKiTiO Thunder enclosures? Please see this guide on how to create an adapter to attach one of the 6P output leads to. Or use enjoy's picture reference below:

 

 

Acknowledgements

Working splitter example pictures courtesy of imgur. Prior to finding this simple version, I created a soldered solution.

 

As applicable to

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


triturbo, Kzsma and itsage liked
ReplyQuote
Topic Tags
Arvydas Bertašius
(@arvydas_bertasius)
New Member
Joined: 2 years ago
 

how to connect with 8 pin connector?

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

.

ReplyQuote
kegare
(@kegare)
New Member
Joined: 2 years ago
 

Hello, I would like to make a new, thinner case for my GTX 1660 (6+2 pin, 110W while gaming). It will be based on AkiTio Node (which I already own). It's powered by 6 pin atx connector and i would like to power it with Dell DA-2 (or similiar, affordable and thin PSU if you can suggest me better option) ask you for a help. From Nando4's guide it looks like all I need to do is to attach PCIe splitter (6+2 F to 6+2 M) to DA-2 and connect REMOTE pin with GND pin on DA-2, right? No more cable management, splitters, etc? Thanks for help

Lenovo YOGA 720 + AkiTio Node (GTX 1660)


ReplyQuote
Stoyanov s
(@stoyanov_s)
Active Member
Joined: 8 months ago
 

Ok. This is great! My question is, do I need one or two of these dell to power the configuration. Because it’s not clear     

 

From what I understand you use one dell to power the egpu board and the card using cable management. 

 

Do do you need to have two of these?

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

.

ReplyQuote
nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 
Posted by: @stoyanov_s

Ok. This is great! My question is, do I need one or two of these dell to power the configuration. Because it’s not clear     

 

From what I understand you use one dell to power the egpu board and the card using cable management. 

 

Do do you need to have two of these?

 

What "power the configuration" are you referring to?

In the above example we see how to use this to power an AKiTiO Thunder2/Thunder3/Lite (DC plug) along with the video card. In the link below I used this idea to power a EXP GDC and GTX 1080 Ti using 2x Dell DA2 adapters:

https://egpu.io/forums/builds/2015-15-dell-precision-7510-q-m1000m-6th4ch-gtx-1080-ti-32gbps-m2-adt-link-r43sg-win10-1803-nando4-compared-to-tb3-performance/

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


ReplyQuote
Stoyanov s
(@stoyanov_s)
Active Member
Joined: 8 months ago
 

@nando4, right. So do I need two dell adapters to power the rx 580 or just one? Because there are videos on YouTube where they used one dell adapter to power the egpu main board and a cable from the mb to the vga. Thanks!

 

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

.

ReplyQuote
nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

@stoyanov_s, RX 580 I tested here would cause a single Dell DA-2 adapter to power off upon prolonged use. Two of them would have been required for trouble free operation. One powering the slot (75W) of the EXP GDC adapter and another wired to the 8-pin (150W) PCIe power connector.

 

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


ReplyQuote
Stoyanov s
(@stoyanov_s)
Active Member
Joined: 8 months ago
 

Okay, thanks for this! 

 

So, there’s no way to make it work just with one. Even undervolting won’t be any good? 

 

What was the point then of splitting the connectors of the one of the adapters? Could you give us your knowledge. 

 

And i I intent to keep the laptop and device on 24/7. Thanks!

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

.

ReplyQuote
sdedalus1
(@sdedalus1)
Eminent Member
Joined: 4 years ago
 

@stoyanov_s, I undervolt my MSI RX580 8G V1 to 1125 mV (–25 mV) with overclock to 1375 mhz core (memory stays at 2000 mhz and 950 mV) and it is completely stable in gaming and stress tests with a single DA-2. But this will depend on the TDP set in the BIOS in your card: some may be higher and you will need to undervolt or underclock more.

@kegare As long as the pinout on the Node matches that of the DA-2 (I have not checked), that is correct.

@nando I though running dual PSUs was discouraged for stability and voltage reasons?

 

This post was modified 5 months ago

2018 Mac Mini (8th,4C,B) + RX 580 @ 16Gbps-TB2 (AKiTiO Thunder2) + macOS 10.14.6 & Win10 1903 // Win10 on external SSD (build link)

 
2014 13" MacBook Pro [4th,2C,U] + RX 580 @ 16Gbps-TB2 (AKiTiO Thunder2) + macOS 10.13.6 & Win10 1903 [build link]  


ReplyQuote
nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 
Posted by: @sdedalus1

@nando I though running dual PSUs was discouraged for stability and voltage reasons?

 

2 exact same Dell DA-2 PSUs power the stable GTX 1080 Ti build in my sig.  One powers the slot (75W) + 6pin (75W) PCI lead. Other powers the second (75W) PCIe lead. 

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


ReplyQuote
 of  2