Minisforum DEG1: Hidden Switches and Other Observations

Notice: Page may contain affiliate links for which we may earn a small commission through services like Amazon Affiliates or Skimlinks.

mattventura

Well-Known Member
Nov 9, 2022
732
396
63
Decided to crack open my DEG1 GPU OCuLink GPU dock. They're advertised as having a "signal amplifier" but I wanted to see if they were retimers or redrivers.

Turns out that they are P13EQX16612 redrivers:



They also include a cable but don't advertise this, at least not in an obvious way.

But the more interesting part is that there are also 3 switches on the PCB, which are not present in the STH review.



Unfortunately, the switches are quite fragile. As you can see, I broke off the "DEBUG" switch's slider trying to manipulate it. Fortunately, that just means that the switch is stuck in the "A" setting, which was how it came from the factory.

The second switch is "FLLOW START". Normally, the auto start/stop seems to only work reliably with Minisforum computers. When flipped this to "ON", it actually got it working with my generic PCIe to external OCuLink adapter. So, if you're having issues, I'd recommend flipping this switch (just be careful not to break the switch).

The third is "TGX" which as far as I can tell is Lenovo's version of OCuLink. Not sure how it differs from standard OCuLink, but the switch seems to be in the "ON" setting by default. Guess it doesn't hurt anything to leave it on?
 
  • Like
Reactions: Unlogic

geerlingguy

New Member
Nov 10, 2021
10
13
3
St. Louis, MO
www.jeffgeerling.com
Thanks for posting this, I was at my wit's end trying to get the dock to do *anything* with a Raspberry Pi. I found that I can at least get power initialization working if I switch OFF the 'TGX' option. But still can't get any cards recognized, tried on two Pi 5s now.

My cheap-o amazon special GPU dock works fine still, but I was hoping to get this Minisforum going since it provides a much more solid base for large GPUs...
 

mejden

New Member
Nov 8, 2025
1
0
1
Thanks for posting this, I was at my wit's end trying to get the dock to do *anything* with a Raspberry Pi. I found that I can at least get power initialization working if I switch OFF the 'TGX' option. But still can't get any cards recognized, tried on two Pi 5s now.

My cheap-o amazon special GPU dock works fine still, but I was hoping to get this Minisforum going since it provides a much more solid base for large GPUs...
I got my RX580 working with it by switching DEBUG to B and FLLOW START to OFF. It was trial and error so not sure why. My RX 580 being old and very brutal with PCIe means I can never restart the system. It always has to be SHUTDOWN -> DOCK ON -> 5 seconds wait -> mini PC on