Two lighting headers sit next to each other on the same board, carry different voltages, and are told apart by the silkscreen next to them
A motherboard can carry two kinds of lighting header, and they are different connections. ASUS specifies the AURA RGB header as 12V/G/R/B and the Addressable Gen 2 header as 5V/Data/Ground. One drives a whole strip to a single colour; the other addresses each LED. Both are rated at a maximum of 3A. The silkscreen printed next to the header is what tells you which one you are looking at — check it before anything is plugged in, because the two specifications describe different voltages arriving on the strip's power contact.
They look like near-identical rows of pins along the edge of the board, often within a few centimetres of each other, and a lot of lighting kit ships with a connector that will sit on either. They carry different things.
The 12V RGB header. ASUS calls these AURA RGB headers. Its user manual for the ROG Strix B550-F Gaming WiFi II states that "The RGB headers support 5050 RGB multi-color LED strips (12V/G/R/B), with a maximum power rating of 3A (12V)". Four named contacts: a 12V supply, and one line each for green, red and blue. The board sets how much of each colour the whole strip shows, so every LED on that strip shows the same colour at the same time.
The 5V addressable header. ASUS calls these Addressable Gen 2 headers, and abbreviates the technology ARGB in its own text: the ROG Strix B850-E Gaming WiFi manual describes the header as one that "allows you to connect individually addressable RGB (ARGB) WS2812B LED strips or WS2812B based LED strips". The specification is different in kind: "The Addressable Gen 2 header supports WS2812B addressable RGB LED strips (5V/Data/Ground), with a maximum power rating of 3A (5V)". Three named contacts: a 5V supply, a ground, and a single data line. There is no red, green or blue wire, because the colour is not sent as a voltage — it is sent as a message down the data line, and each LED in the chain reads the part addressed to it and passes the rest along. That is what "addressable" buys you: one strip, many colours at once.
So the difference is not a version number. It is a different supply voltage and a different way of carrying colour, on a header that is a different shape. A strip is built for one or the other, not for both.
Read the board, not the cable. On the B550-F Gaming WiFi II, ASUS prints the header names on the PCB itself, and its manual's connector diagrams show what is printed:
ADD_GEN 2 — the addressable header. The manual's pinout diagram marks PIN 1 and labels the contacts +5V, Data, Ground.RGB_HEADER1 and RGB_HEADER2 — the two AURA RGB headers. Both diagrams mark PIN 1 and label the contacts +12V, G, R, B.The naming is not universal even within one vendor's range. On the newer ROG Strix B850-E Gaming WiFi the same manual convention prints the three addressable headers as ADD GEN2_1, ADD GEN2_2 and ADD GEN2_3 — a space instead of an underscore, and a numeric suffix, for the same kind of header. Match on the +5V or +12V the manual prints against pin 1, not on the exact spelling of the label.
If the silkscreen is under a heatsink or a cable, the board's own manual is the reliable route: the connector chapter lists every header by name with its pinout, and our guide to finding your exact motherboard model covers getting to the right manual when you are not sure which revision you own.
ASUS's manuals label the contacts on each header but do not print a physical pin count for either one, and they say nothing about whether a connector is mechanically keyed to stop it seating on the wrong header. We found no first-party source for that, so this page makes no claim about which connectors physically fit which headers. Do not treat "it went on" as evidence that it belongs there — use the label and the pinout above.
Here is what the specifications say, and it is worth setting the two lines beside each other. The addressable header supplies "5V/Data/Ground". The RGB header supplies "12V/G/R/B". A strip built for the first expects five volts on its supply contact; the second header puts twelve volts there. That is more than twice the voltage the part was specified for, on the contact that feeds it.
We have no test bench and we have not tried this, and ASUS does not state the outcome in either manual, so this page does not tell you what happens. What we can tell you is that the manufacturer's own specifications describe two different supply voltages on connections that sit centimetres apart, and that ASUS thought the mix-up likely enough to write a troubleshooting note about voltage alignment for both headers — see the troubleshooting section below, where those notes are quoted. Treat that as the reason to check the label, rather than as a reassurance that a wrong connection is recoverable.
The reverse mistake — a 12V strip on a 5V header — is a different situation again: an addressable header has no red, green or blue lines to drive, so there is nothing on it that a 5050 RGB strip is wired to receive.
Both header sections in the ASUS manual carry the same caution, verbatim: "Before you install or remove any component, ensure that the power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components." That applies to lighting strips as much as to anything else you plug into the board.
Each header has a stated ceiling, and it is easy to walk past because it sits in a footnote rather than in the marketing copy.
Current. Both header types are rated the same way on the B550-F Gaming WiFi II: "a maximum power rating of 3A (12V)" for the RGB headers, and "a maximum power rating of 3A (5V)" for the addressable one. Same number, different voltage, so not the same amount of power.
LED count. The addressable headers also carry a ceiling on how many LEDs the board will drive, and it is stated per board rather than as a general figure. On the B550-F Gaming WiFi II, "the addressable header on this board can handle a combined maximum of 500 LEDs". On the newer B850-E Gaming WiFi the figure is broken down by mode: "the addressable header on this board can support up to 120 LEDs per header in Gen1 mode, or a combined maximum of 500 LEDs in Gen2 mode".
Note what "combined" is doing in both sentences. The B850-E has three addressable headers and one 500-LED budget across them, not 500 each. If you are chaining strips, the number that matters is the total on the board.
These are the figures ASUS publishes for these two boards. Other boards state their own, in the same place in their own manuals, and this page does not generalise past the two it read.
ASUS publishes a short troubleshooting note against each header, and between them they cover most of what actually goes wrong. Quoted rather than paraphrased, because the voltage detail is the whole point:
On an addressable strip: "If your LED strip does not light up, check if the addressable RGB LED strip is connected in the correct orientation, and the 5V connector is aligned with the 5V header on the motherboard."
Two separate things are being asked there. Orientation is whether the connector is round the right way — pin 1 on the strip against pin 1 on the board, which is why the manual marks PIN 1 on every diagram. Alignment is whether the strip's power contact is sitting on the header contact that carries its voltage. A connector can be the right way round on the wrong header.
Three more things the manual says, all of which explain a strip that appears dead when nothing is actually wrong:
If nothing on the board lights up and the machine is not reaching the desktop either, the lighting header is not your problem — start with our guide to a system that will not POST instead.
Which headers a board has is on its specification page, in the Internal I/O Connectors row. Two boards we review make the contrast cleanly.
Both types on one board. The ASUS ROG Strix B550-F Gaming WiFi II, an AM4 board, lists "1 x Addressable Gen 2 header" and "2 x AURA RGB headers". That is a board where getting the label right matters most, because both kinds are present and the wrong one is right there.
Addressable only. The ASUS ROG Strix B850-E Gaming WiFi, a current AM5 board, lists "3 x Addressable Gen 2 header(s)" and no AURA RGB header at all. A 12V strip from an older build has nothing to plug into on that board.
That is an observation about these two boards, taken from their own specification pages — not a statement about a generation, a vendor or the industry. If lighting headers matter to your build, read the Internal I/O Connectors row on the specification page of the board you are actually buying, and count them there. The marketing copy will tell you a board has RGB; only that row tells you which kind, and how many.
Our own spec tables do not carry a lighting-header row, so this is one you have to look up per board. The reviews index has the boards we cover, and each review links out to the manufacturer's page.
5V/Data/Ground and 12V/G/R/B specifications, the 3A ratings, the 500-LED combined maximum, the ADD_GEN 2 and RGB_HEADER1/RGB_HEADER2 pinout diagrams, the power-supply caution and every troubleshooting note quoted above.ADD GEN2_1 to ADD GEN2_3 labels.Every voltage, pinout label, current rating and LED ceiling on this page is quoted from the two ASUS user manuals above, and the header counts from the two ASUS specification pages, all read on 9 September 2026. We have no test bench: nothing here is a measurement of ours, no strip was connected to any header by us, and no board on this site has had its lighting headers inspected in person. We did not find a first-party source for the physical pin counts or for whether the connectors are keyed, so this page states neither, and it does not say what happens electrically when a strip meets the wrong voltage — only what the two specifications are. The figures are ASUS's for these two boards; other boards publish their own.
Published 9 September 2026. Manufacturer sources read on 9 September 2026.