Three-quarter view Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.
Mating face Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.
Fitted in place Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.
Recognition drawing Original schematic, not to scale. Drawing review pending.
Image inspection / P189
See the view. Check its scope.
1 registered view for this reference. Different part examples are not automatically mates; all remain not to scale and independently unapproved.
(private workspace)
P189 / Concept — not physical geometry
ATX identity has two ends
Motherboard role and PSU cable-type checks
information hierarchy · Concept only
Not to scale. Technical and rights review pending.
Inspect view & provenance ↗ (private workspace)
INTERNAL SYSTEMS / POWER
ATX 24-pin is main system power—not a generic 24-pin harness
No. Intel’s published ATX guide identifies a 24-position motherboard main-power connector and its signals, but those motherboard-side assignments do not define the proprietary modular PSU-end wiring on every model. The same-looking cable from another supply should not be used without exact manufacturer approval.
Two eight-pin power destinations. Original qualitative role diagram; not mechanical artwork, not to scale or a wiring map. Source context S198 · S199.
Three checks before proceeding
Read the motherboard main-power designation and PSU manual.
Use the harness expressly supplied or approved by the exact PSU manufacturer and model.
If a cable has no traceable model provenance, do not energize the board through it.
One mistake to avoid
Reusing a cable from another modular PSU solely because its motherboard plug fits.
Claim-specific evidence remains in the canonical record. Concept diagrams do not show any safe wiring or mechanical mating geometry.
The useful distinction
Recognize it. Then verify it.
The ATX main motherboard-power interface uses a 24-position 2x12 connector form in the documented ATX design guide. [C189A]
CORSAIR identifies the 24-pin ATX connector as the motherboard main-power connection and describes a retention latch. [C189C]
CORSAIR states that the Type 3 versus Type 4 cable difference is the 24-pin ATX cable pinout; this observation does not transfer a cable to an unlisted power supply. [C189D]
CORSAIR warns that Type 3 and Type 4 modular PSU cables are not compatible with Type 5 power supplies. [C189E]
Source-scoped identification facts
Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.
Documented examples; not a mating drawing or compatibility approval
Nominal contacts
24S197Documented position count only; V36 does not publish the signal/power assignment here.
Contact rows
2 (Source-described array; C189A); 2 (39-01-2240)S197 · S935Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof. 39-01-2240. Documented role: socket housing. Molexlimited-online-catalog notice recorded. No housing-only current rating used for completed ATX harness.; KeyingNo and PolarizedYes are separate manufacturerattributes;retained in context,not a newly observed keyshape.
Contact pitch
4.2 mm published contact centerline (39-01-2240)S935Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 39-01-2240. Documented role: socket housing. Molexlimited-online-catalog notice recorded. No housing-only current rating used for completed ATX harness.; KeyingNo and PolarizedYes are separate manufacturerattributes;retained in context,not a newly observed keyshape.
Connector role
plug; header; socket housing (39-01-2240)S197 · S214 · S935Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. PSU main-power cable plug / motherboard header interface 39-01-2240. Documented role: socket housing. Molexlimited-online-catalog notice recorded. No housing-only current rating used for completed ATX harness.; KeyingNo and PolarizedYes are separate manufacturerattributes;retained in context,not a newly observed keyshape.
Coupling / latch
latch (Claim C189C); Positive mating lock;manufacturer separately lists polarized yes and keyed no (39-01-2240)S570 · S935Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established. 39-01-2240. Documented role: socket housing. Molexlimited-online-catalog notice recorded. No housing-only current rating used for completed ATX harness.; KeyingNo and PolarizedYes are separate manufacturerattributes;retained in context,not a newly observed keyshape.
Manufacturer
Molex (39-01-2240)S935Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 39-01-2240. Documented role: socket housing. Molexlimited-online-catalog notice recorded. No housing-only current rating used for completed ATX harness.; KeyingNo and PolarizedYes are separate manufacturerattributes;retained in context,not a newly observed keyshape.
Series
Mini-Fit Jr. (39-01-2240)S935Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 39-01-2240. Documented role: socket housing. Molexlimited-online-catalog notice recorded. No housing-only current rating used for completed ATX harness.; KeyingNo and PolarizedYes are separate manufacturerattributes;retained in context,not a newly observed keyshape.
Exact part / implementation
39-01-2240 (39-01-2240)S935Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 39-01-2240. Documented role: socket housing. Molexlimited-online-catalog notice recorded. No housing-only current rating used for completed ATX harness.; KeyingNo and PolarizedYes are separate manufacturerattributes;retained in context,not a newly observed keyshape.
Not recorded: Positions / cavity span, Populated contacts, Dimensions / axis, Contact gender / arrangement, Mounting, Keying / polarization, Shell / form, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.
Recorded variant and source limits
The normalized grid is not a physical face-view pin locator.
Do not apply this motherboard-side assignment to a modular PSU-side connector; those interfaces can be vendor-specific.
No fabrication tolerances or safe probing procedure are published.
Intel ATX v3 PSU main power cable connector (Molex 39-01-2240 or equivalent): Contact numbers per Table 5-1; Figure 5-2 is a pin-side view.
Intel rev 2.1a main-power cable harness: Numbered assignments only. The retrieved Intel section supplies a table but no numbered mating-face or wire-side drawing; spatial orientation is UNVERIFIED. Do not mirror these numbers onto an unidentified cable end.
MSI B550-A PRO ATX_PWR1: MSI p.34 board-connector drawing as printed: vertical layout, 12 upper left, 1 lower left, 24 upper right, 13 lower right. Not a cable rear view.
Not included. Check exact device and accessory documentation.
A boundary, not an omission to guess around.
Use the source-backed form or position count only for identification. Resolve ratings, protocol, direction, wiring, cable construction and exact device support from the relevant equipment and component documentation.
Before you connect
What to check
Identify the exact connector family and variant from the equipment or cable documentation.
Keep shape, contact count, protocol, electrical rating and device support as separate facts.
Do not force, rewire or adapt a connector from this recognition record; resolve the remaining requirements first.
Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.
What the status labels mean
Confirmed
Recorded research passes agree within this variant; this is not independent human review or hardware validation.
Single source
Only one underlying document, or one pass, supports this assignment.
Device-specific
Supported for the named equipment or wiring only. Check your device’s manual.
Unverified
Missing or conflicting evidence. Do not wire from this row.
Not connected
The source explicitly says NC, no contact or no pin for this wiring.
What is not established
This field note does not approve a connection, adapter, cable assembly, rewiring scheme or fabricated part. It intentionally omits unsupported pin assignments and mechanical tolerances.
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
Locator: Main power connector section Access: public page. Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.
CORSAIR states that the Type 3 versus Type 4 cable difference is the 24-pin ATX cable pinout; this observation does not transfer a cable to an unlisted power supply.
Locator: Disclaimer items 2 and 3, above the model table. Model compatibility icons not interpreted. Access: public page. Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established.
Locator: Disclaimer items 2 and 3, above the model table. Model compatibility icons not interpreted. Access: public page. Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established.
ATX motherboard role and separable PCIe cable portions ↗ 24-pin ATX connector and 6-pin / 6+2-pin PCIe sections. Text inspected; article images unavailable. S570 · observation date 2026-10-12. The guide identifies motherboard main power and describes using the six-position portion of a documented 6+2 cable. It does not identify every bare housing or authorize an unknown PSU cable.
The observation date is not a drawing revision. No wiring, fit or installation approval.
The 24-pin cable-type exception
CORSAIR / Type 3, Type 4 and Type 5 warning
Role
Manufacturer-specific modular cable families.
Distinction
Type 3 and Type 4 differ at the 24-pin ATX pinout; neither is Type 5 compatible.
Established
A familiar motherboard-end shape does not establish the PSU-side cable match.
Not established
Compatibility for an unlisted model or another manufacturer.
Next check
Resolve the exact PSU model and cable type; do not reuse a cable on shape alone.
Source-field reference; no physical view assigned to this row.
24-pin cable types: the exception matters ↗ Disclaimer items 2 and 3, above the model table. Model compatibility icons not interpreted. S571 · observation date 2026-10-12. The manufacturer distinguishes Type 3 and Type 4 specifically at the 24-pin cable pinout and excludes both from Type 5 supplies. This is a manufacturer-specific warning, not a universal type system.
The observation date is not a drawing revision. No wiring, fit or installation approval.
Assessment 2026-10-22 · earliest scheduled source review 2027-01-03. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.
Scoped support: Identifies the ATX main power connector as a 24-pin / 2x12 Mini-Fit Jr.-family interface in the documented ATX design guide.
Not established / limitations: Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.
Scoped support: The guide identifies motherboard main power and describes using the six-position portion of a documented 6+2 cable. It does not identify every bare housing or authorize an unknown PSU cable.
Not established / limitations: Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established.
Locator: 24-pin ATX connector and 6-pin / 6+2-pin PCIe sections. Text inspected; article images unavailable.
Scoped support: The manufacturer distinguishes Type 3 and Type 4 specifically at the 24-pin cable pinout and excludes both from Type 5 supplies. This is a manufacturer-specific warning, not a universal type system.
Not established / limitations: Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established.
Locator: Disclaimer items 2 and 3, above the model table. Model compatibility icons not interpreted.
Trace 4 claims to their source records
C189A · P189
Intel documents the ATX main power connector as a 24-pin / 2x12 connector interface in the cited design guide.
Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.
CORSAIR states that the Type 3 versus Type 4 cable difference is the 24-pin ATX cable pinout; this observation does not transfer a cable to an unlisted power supply.
Claim scope: V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established.
Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.
(private workspace)
