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DMA card kill switch: what it does

The switch on your DMA card's bracket turns the card off without opening the case. Where to find it, and why you only flip it with your PC shut down.
Post9d ago · developer · 9 reads

What it is for

With the kill switch you don't have to open the case and pull the card out every time you want it off. It's handy when you want to rule the card out while you figure out a problem, or when someone else is using the PC.

How it works

The switch controls the card's power. GODLIKE calls it the card's main on/off switch. With it off, the card has no power and its lights go out. The PC finds nothing there when it starts, so your second computer can't read it either. With it on, the PC finds the card as normal, with whatever firmware is on it.

  • Your firmware stays on the card.
    The switch doesn't change any settings or touch what you flashed. The card comes back exactly as it was.
  • The PC only looks for it at startup.
    It only sees a change to the switch the next time it starts.

The one rule

NEVER flip the kill switch while your PC is on. The PCIe slots in a normal desktop aren't built for a card showing up or disappearing while the PC is running. Sometimes nothing happens until the next start. Sometimes the PC crashes and you lose anything you hadn't saved, or the card won't come back until you fully power it off.

Do the same three steps to turn the card back on. If your build came with an activator, run it again on your second computer once the main PC is back on, like after any restart.

Where it is

On the GODLIKE 100T it's on the bracket (the metal plate at the back of your PC), next to the two USB-C ports. You can reach it without opening the case.

The GODLIKE 100T's bracket seen from outside the PC: DATA port first, then the JTAG port, then the kill switch nearest the gold strip end

Other cards put it somewhere else or don't have one. If yours has none, shut down and take the card out to turn it off. Already own a DMA card? covers cards we didn't sell.

If the card doesn't come up after you switch it back on, do the full restart from the flashing guide: power off, unplug, hold the power button for fifteen seconds, and plug back in. DMA card not working has the rest.

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