The cable that comes out of your power supply when you fit a Hydrus 16-pin cable does not stop mattering just because it is no longer connected. Label it, store it with the unit it belongs to, and you keep the entire swap reversible - something that becomes genuinely useful the moment a build changes in a way the new cable was not meant for.
Quick Answer
After installing the R699 AsiaHorse Hydrus 16-pin (12VHPWR) cable, label the power supply's original modular cable and store it with that specific unit. You may need to reconnect it - if the build changes, the card falls outside AsiaHorse's compatible list, or the supply turns out to be a Lian Li or Sharkoon unit AsiaHorse cautions against pairing with this cable - and it is the one cable guaranteed to match that particular supply.
Why the original cable is worth the effort of keeping
It is matched precisely to your specific power supply, since modular pinouts are not standardised across manufacturers - a cable pulled from a different unit, even one that looks similar, is not a safe substitute. If the Hydrus cable pairing ever needs undoing, for any reason at all, the factory-original cable is the only guaranteed-correct fallback available.
What actually belongs on the label
At minimum, record which power supply the cable came from - brand and model, since that is the detail that matters most if it ends up separated from the unit at some point. If your storage setup has multiple supplies from a build history spanning several machines, a date or a build name adds useful context too, though the supply identification is the part that genuinely matters.
Where to actually store it
With the supply's own box or its accessory bag is the most sensible place, keeping the cable and the unit associated with each other rather than tossed into a general parts bin where original pairings become impossible to reconstruct later. If the original box is gone, a labelled bag clipped or taped near where the supply itself is stored works just as well.
Why mixing up cables between supplies is a real risk
Modular power supply pinouts genuinely differ between manufacturers, sometimes even between different model lines from the same manufacturer. Using a cable pulled from a different unit - even one that superficially looks like a match - is something worth avoiding entirely, not a minor inconvenience. A mismatched pinout at a power connector is not a mistake you want to discover through trial and error.
When you might actually need it back
Three realistic scenarios: the build's card changes to something outside AsiaHorse's compatible list, the supply turns out to be one of the two brands AsiaHorse specifically cautions about, or the whole build gets rebuilt around a different case where the routing no longer works for this particular cable. In any of those situations, having the labelled original on hand turns a potential scramble into a five-minute swap.
Is labelling worth it for just one cable?
For a single supply in a single build, it might feel like overkill - but it is genuinely cheap insurance, and it becomes considerably more valuable the moment a build has several detachable cables that look broadly similar once removed from their sockets. The five minutes spent labelling now is considerably less than the time spent guessing later.
Does this affect either component's warranty?
No. Storing the original cable properly is simply good practice, with no bearing on the warranty coverage for either the cable or the power supply itself.
Browse comprehensive cable solutions, and see graphics card accessories for anything a 12VHPWR build still needs.
Frequently Asked Questions
Why bother keeping the original power supply cable at all?
It is matched to that specific supply and is the guaranteed fallback if the Hydrus pairing ever needs undoing for any reason.
What information belongs on the label?
At minimum, which power supply it came from - brand and model - since that is the detail that matters if it gets separated from the unit.
Where is the best place to store it?
With the supply's own box or accessory bag, keeping the cable and the unit associated rather than mixed into a general parts bin.
Does it actually matter if cables get mixed up between different supplies?
Yes. Modular pinouts differ between manufacturers, so a cable from another unit is not a safe substitute even if the connector looks alike.
When might the original cable actually be needed again?
If the card changes to one outside AsiaHorse's list, the supply turns out to be a named caution brand, or the build changes case entirely.
Is labelling worth the effort for just one power supply cable?
It is cheap insurance regardless, and becomes more valuable once a build history involves several visually similar detachable cables.
Does keeping the original cable affect either part's warranty?
No, it has no bearing on warranty coverage - it is simply good practice for keeping the swap reversible.
Just swapped in a new cable and want to keep things reversible?
Label the original and store it with your power supply, then browse Evetech's cable range for anything else your build needs.