Phanteks Magnetic RGB LED Strip 400mm (PH-LEDKT_M4)
A tidy magnetic 12V RGB strip, held back by its age and the separate motherboard adapter.
We bought Extended Computer Magnetic RGB LED Strip for ASUS Aura Sync / MSI Mystic Light / RGB Fusion (4-pin). It's no longer documented anywhere, so this page reviews the closest well-covered match. It is a magnetic 12V 4-pin RGB case strip of similar length and price from a known PC case maker with published specs and launch coverage.
The short version
- Builders with a steel case and a 12V 4-pin RGB motherboard header
- Owners of Phanteks cases with built in LED connectors
- Anyone adding simple one color case lighting
- Your board only has 5V 3-pin addressable (ARGB) headers
- You want rainbow or per LED effects
- Your case is aluminum and you would rather not use tape
What owners like
- Magnetic mounting makes placement inside a case simple
- Silicone housing gives even, bright light
- Strips can be chained to cover a larger case
Common complaints
- The single strip ships without the motherboard adapter, which comes in the combo kit
- An older 12V RGB design without per LED effects, and retail stock has thinned
Based on Newegg's spec listing, the Phanteks launch coverage on Modders Inc and EnosTech, and the Amazon listing title. Few owner reviews could be read, so themes lean on maker and editorial descriptions..
Research scores
Scored from the maker's specs and what owners report. Drew's own notes and photos will refine these.
Ownership
Drew's hands-on notes for this product are on the way. Long-term updates will be added to this timeline.
What it does
A 400 mm magnetic 12V RGB LED strip for lighting the inside of a PC case, run from a Phanteks case or a motherboard 4-pin RGB header; reviewed here in place of the unbranded magnetic 4-pin RGB strip it closely resembles.
- Magnets in the silicone housing snap the strip to a steel case panel
- 3M tape included for aluminum or other non magnetic surfaces
- Chainable, so more strips can be added from one header
- Silicone housing that Phanteks says will not dry out or crack like epoxy strips
- Works with Phanteks cases that have LED connectors, or motherboard RGB headers such as ASUS Aura and MSI Mystic Light through the Phanteks RGB adapter
A sensible choice for a builder with a steel case and a 12V 4-pin RGB header who wants strips that stick on with magnets and can be chained. It is an older 12V design that lights the whole strip one color at a time, and Phanteks pairs it with an RGB adapter for motherboard use, so check how it will connect before buying.
How it compares
Specs
- Length
- 400 mm (15.7 in)
- LEDs
- 21 x 5050 full color RGB
- Connector
- 4-pin (+12V, G, R, B) input, 4-pin male output for chaining
- Mounting
- 6 built in magnets plus 3M double sided tape for aluminum cases
- Housing
- Flexible PCB in a silicone housing
- Power
- 12V, up to 0.42 A (about 5 W) per strip
- Rated life
- 20,000 hours MTBF
Worth knowing
- This is a 12V RGB strip; do not plug it into a 5V 3-pin addressable header
Questions
Does the Phanteks RGB strip work with ASUS Aura or MSI Mystic Light?
Yes, on 12V 4-pin RGB headers through the Phanteks RGB adapter, which comes in the combo kit.
How many LEDs are on the strip?
Each 400 mm strip has 21 5050 RGB LEDs.
Can the strips be chained?
Yes. Each strip has a 4-pin output for adding more strips.
Will it stick to an aluminum case?
The magnets need steel, so Phanteks includes 3M double sided tape for aluminum surfaces.
Sources
- Newegg: Phanteks RGB LED Strip 400mm (PH-LEDKT_M4)
- Modders Inc: New Phanteks Universal PSU Extension Sets and RGB LED Strips Announced
- EnosTech: Phanteks Introduces New RGB LED Strips and Combo Set
- Amazon.com: Phanteks PH-LEDKT_M4 LED Strip, 400mm
Researched 2026-10-02. We bought this product; our page is built from the maker's details and what owners report across reviews and forums. We never copy Amazon customer reviews.
