Test Webhook
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Test Webhook

F-SROS Unavailable
$25.99$32.99USDFree shipping over $125
ETA unknown at this time.
What this works with

Check these against your build before you order. If anything here does not match what you have, ask us first — it is cheaper than a return.

  • LED Type: 12V RGB
Not sure? Send us your model/part number and we'll confirm it for you.
Ask about availability
Building your first loop? Plan the rest of it
Why buy it here
US warranty, handled in Boise
Claims are settled here, by the people who sold it to you.
Custom watercooling since 2002
PrimoChill, from Boise, Idaho.

About this part

The Bykski 1 to 10 RGB 12V Synchronization / Expansion Bus allows you to expand your 12V motherboard LED header.

In the box
  • 1x Expansion Bus
  • 1x 12V Sync Cable
If the gallery shows a parts diagram, that diagram is the source of truth for what ships.
Datasheet
SKUF-SROS

What buyers said

Left by people who bought this part here. Compatibility reports are the useful ones — if you fitted it, say which board.

Customer Reviews

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Before you install it

This is a component, not an assembly — how it goes in depends on the loop it is joining. What does not change is the last step: leak test before power. Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.

Custom water cooling is installed by you, at your own risk. We are not responsible for leaks, or for damage to your parts or system. If you're unsure at any step, ask before you power the loop.

Questions people ask about this part

Answers specific to F-SROS. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.

What does this part fit?
This part is specified by what it connects to, not by a card model:
  • LED Type: 12V RGB

Check those against your build before you order. If anything does not match, ask us first — it is cheaper than a return. Part number F-SROS.

Is it in stock, and when will it ship?
Not currently available to order, and we have no ETA to give at this time. Ask us and we will confirm one in writing as soon as we have it.
Can I return it if it turns out not to fit?
Yes. Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used. So we would rather check the fit with you first: send us the model and we will check it against this part.
Who handles the warranty?
PrimoChill covers this part for 1 year. Every warranty claim is handled directly by our support team, so you deal with us from start to finish.
Is shipping free?
Shipping is free on orders over $125 to addresses in the lower 48 US states.
Are printed instructions included?
No printed manual is included. Installation references are in the product gallery images, and the install guides on this site cover the process step by step.
Do I need anything else to use it?
Check the parts list above against what you already have. If you are building a loop from scratch, send us the full parts list and we will tell you what is missing before you order.

Ask us before you order

Send your exact hardware model or ask for an ETA on this part and we'll confirm the right part before you spend $25.99 — or tell you honestly that this isn't the one.

Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.

Ask about compatibility