(private workspace)P358 / Source-observed physical study
Mini-Fit Jr. / board header
Molex 874272002
Oblique front and top · Board header
Not to scale. Technical and rights review pending.
Inspect view & provenance (private workspace)P358 / Molex Fit wire-to-board / Connector
Molex Mini-Fit Jr. connector family
Molex identifies Mini-Fit Jr. as a 4.20 mm nominal-pitch connector family; the cited 874272002 example is a right-angle, 20-circuit PCB header.
Also called Mini-Fit Jr. Mini Fit Jr Mini-Fit 4.20 mm Molex 87427
Mini-Fit Jr. and Micro-Fit 3.0 are different named families. Neither name identifies an arbitrary PC power cable.
Look for
Use the actual Molex header and receptacle part numbers and identify the keyed housing, row count and mounting orientation from their manufacturer drawings.
Claim inspection dates: 2026-10-10, 2026-10-12, 2026-10-22 · Independent review pending
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 / P358
See the view. Check its scope.
5 registered views for this reference. Different part examples are not automatically mates; all remain not to scale and independently unapproved.
(private workspace)
(private workspace)P358 / Source-observed physical study
Mini-Fit Jr. / cable housing
Molex 39012080 (39-01-2080)
Oblique front and latch · Cable housing
Not to scale. Technical and rights review pending.
Inspect view & provenance (private workspace)
(private workspace)P358 / Source-observed physical study
Mini-Fit Jr. / latch profile
Molex 5557 dual-row family; generic side elevation
Latch-side exterior · Cable housing
Not to scale. Technical and rights review pending.
Inspect view & provenance (private workspace)
(private workspace)P358 / Source-observed physical study
0039012240 — bare 24-position housing
Molex 0039012240 / bare receptacle housing
oblique exterior · Cable housing
Not to scale. Technical and rights review pending.
Inspect view & provenance (private workspace)
(private workspace)P358 / Concept — not physical geometry
Molex Mini-Fit Jr.
874272002 board header
Pitch and named example; no physical view · Concept only
Not to scale. Technical and rights review pending.
Inspect view & provenance (private workspace)Matching notes / Miniature repair / P358
What does “Molex plug” leave unspecified?
The name does not identify a component or wiring system. The existing examples separate a Mini-Fit Jr. board header, a Micro-Fit 3.0 board header and a Mini-Fit housing. Pitch, circuit count, mounting role, locking, polarization and keying are separate fields—not a PSU-cable compatibility verdict. C358A · C358B · C358C · C358D · C359A · C359B
| Check | Documented distinction | Boundary |
|---|---|---|
| Mini-Fit Jr. header example | 874272002: a 20-circuit, right-angle PCB-header example at nominal 4.20 mm pitch. C358A · C358B | This board component is not a universal pinout or a finished power-supply cable. |
| Micro-Fit 3.0 header example | 430451200: a 12-circuit, dual-row, right-angle PCB-header example at nominal 3.0 mm pitch. C359A · C359B | The shared “Fit” wording does not establish Mini-Fit/Micro-Fit mating or electrical assignments. |
| Housing example | 0039012240: a 24-circuit, two-row receptacle housing with 4.20 mm mating pitch. C358C | These housing fields do not identify an ATX cable assembly or any connected power supply. |
| Three independent fields | For 0039012240, locking to the mating part and polarization are listed as Yes; keying to the mating part is listed as No. C358D | Keep the fields separate. Mechanical polarization is not a positive/negative wire assignment or a compatibility approval. |
- What the evidence supports
- Use the complete Molex part identity and the device’s required mating component.
- What not to conclude
- The family name does not establish a Micro-Fit mate, a cable pinout or PSU approval.
- Keep this check open
- The desired physical housing study still lacks inspected geometry; its concept view remains labeled.
Keep this limit: Do not choose a power cable by connector appearance. Exact equipment, complete cable-assembly identity and electrical assignments remain outside these component-level examples. C358B · C358C · C359B
Before you choose a part
- Separate header, housing and terminal roles.
- Read the exact part drawing and circuit count.
- Resolve the exact equipment and cable requirements before connection.
Source recheck · 14 October 2026. The current Molex pages expose structured physical fields but also display a limited-information notice. The physical fields were checked; complete family descriptions, availability, current ratings, wiring and drawing revisions were not freshly verified.
Source-qualified reference, not a mating, wiring or repair approval. Each linked claim and source carries its own recorded inspection date and review status; selected reobservations are not independent technical or rights approval.
Source trail: S468 · S573 · S469.
Power connector desk · All eight mechanical checks · Molex Micro-Fit 3.0 connector family
Evidence for this decision · 3 source-scoped observations
C358A (private workspace) — Molex product 874272002 is described as a Mini-Fit Jr. right-angle PCB header with 20 circuits and 4.20 mm nominal pitch.
Source-checked named manufacturer series or part number only; no unknown-cable compatibility or engineering signoff. S468
C358B (private workspace) — The cited Molex product is a PCB header example, not a universal pinout, replacement cable or safety endorsement for a power supply.
Source-checked named manufacturer series or part number only; no unknown-cable compatibility or engineering signoff. S468
C359A (private workspace) — Molex describes product 430451200 as a Micro-Fit 3.0 right-angle header with 3.00 mm nominal pitch, dual-row arrangement and 12 circuits.
Source-checked named manufacturer series or part number only; no unknown-cable compatibility or engineering signoff. S469
Manufacturer evidence is not an independent review, wiring assignment or hardware test.
Visual atlas / Series 02 / P358
Keep the unknown visible.
What this view supports
- The Mini-Fit Jr. label and 4.20 mm nominal pitch
- The cited example is a 20-circuit right-angle PCB header
What remains unknown
A label card is not a header silhouette. No unknown mating face, key pattern or dimensions are supplied.
Why V118 used a concept: The exact 874272002 primary exterior image/customer drawing was not retrievable; do not substitute a generic Mini-Fit housing.
The next useful check
Find the full header and cable-side part numbers, circuit count, keying and terminal specification.
Exact source view, limits and rights
Visual inspection 2026-10-11. AI-assisted source inspection; independent drawing and rights reviews pending. These are original qualitative interpretations, not mechanical drawings, pinouts or approved connections.
Independent simplified vector interpretation and original factual paraphrase only. No manufacturer image, PDF, CAD, logo or traced path is redistributed. Independent technical and rights assessment remains pending.
- S468 · Molex — Mini-Fit Jr. header product 874272002
Part Number 874272002; product name, series 87427, 4.20 mm mating-interface pitch, right-angle, 20 circuits
Only the described first-party series or precise example part; no dimensioned geometry, assembly mating certification or arbitrary equipment compatibility. Manufacturers describe the series or named example, not a complete compatible harness, exact pin assignment, or electrical approval. No independent hardware, manufacturing drawing, license or device-specific test was performed.
Canonical evidence is retained separately. Existing claim dates are unchanged; only new V118 claims have a new inspection date. No live electrical, energized probing, forced mating or optical-port inspection is recommended.
V117 / READER FIELD GUIDE / THE EXACT PART
Before you connect or replace
Mini-Fit Jr. is not Micro-Fit 3.0
No. Molex lists separate 4.20 mm Mini-Fit Jr. and 3.00 mm Micro-Fit 3.0 families. Each has its own mating components. Do not assume a PC power harness is compatible because the overall housing looks similar.
Three checks and exact source trail ↗A Mini-Fit Jr. product is not a harness pinout
Molex 874272002 is an example right-angle 20-circuit PCB header with 4.20 mm nominal pitch. That header description does not disclose or approve the wiring of an arbitrary assembled cable.
Three checks and exact source trail ↗Editorial decision guidance only. A connector identity or nominal pitch does not establish approved mating, safe wiring or a supported device combination.
The useful distinction
Recognize it. Then verify it.
Molex identifies Mini-Fit Jr. as a 4.20 mm nominal-pitch connector family; the cited 874272002 example is a right-angle, 20-circuit PCB header. [C358A]
The cited Molex product is a PCB header example, not a universal pinout, replacement cable or safety endorsement for a power supply. [C358B]
Molex 0039012240 is listed as a natural-color receptacle housing with 24 circuits, two rows and 4.20 mm mating pitch; these are housing-level catalogue fields, not an ATX cable-assembly identity. [C358C]
For 0039012240, Molex lists locking to the mating part and polarization as Yes while keying to the mating part is No. The independently labelled fields must not be silently merged into one compatibility statement. [C358D]
The exact 0039012240 product page links an oblique image of a bare housing with a central latch; the photograph does not depict a wired ATX cable assembly or establish a current drawing revision. [C358E]
Molex 0039012240: coupling: Lock to mating part: yes; keying: Polarized to mating part: yes; keyed to mating part: no; shell: Natural nylon housing. Only Molex 0039012240; no family-wide generalization. [C358F]
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.
| Nominal contacts | 20 (Molex 874272002 right-angle PCB header)S468Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Source-checked named manufacturer series or part number only; no unknown-cable compatibility or engineering signoff. |
|---|---|
| Positions / cavity span | 20 (Claim C358A); 24 (Claim C358C)S468 · S573Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Source-checked named manufacturer series or part number only; no unknown-cable compatibility or engineering signoff. V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established. |
| Contact rows | 2 (Claim C358C)S573Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Molex 0039012240 is listed as a natural-color receptacle housing with 24 circuits, two rows and 4.20 mm mating pitch; these are housing-level catalogue fields, not an ATX cable-assembly identity. | V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established. |
| Contact pitch | 4.2 mm Source-described pitch / centerline (Claim C358A); 4.2 mm Source-described pitch / centerline (Claim C358C)S468 · S573Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Source-checked named manufacturer series or part number only; no unknown-cable compatibility or engineering signoff. V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established. |
| Connector role | Receptacle connector housing (Molex 0039012240)S573Source-scoped examples are separate; select the exact variant and measured axis. Molex 0039012240. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Contact gender / arrangement | receptacle (Molex 0039012240)S573Source-scoped examples are separate; select the exact variant and measured axis. Molex 0039012240. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Mounting | board (Claim C358A); board (Claim C358B)S468 · S468Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Source-checked named manufacturer series or part number only; no unknown-cable compatibility or engineering signoff. |
| Coupling / latch | Lock to mating part: yes (Molex 0039012240)S573Source-scoped examples are separate; select the exact variant and measured axis. Molex 0039012240. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Keying / polarization | Polarized to mating part: yes; keyed to mating part: no (Molex 0039012240)S573Source-scoped examples are separate; select the exact variant and measured axis. Molex 0039012240. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Shell / form | Natural nylon housing (Molex 0039012240)S573Source-scoped examples are separate; select the exact variant and measured axis. Molex 0039012240. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. |
| Manufacturer | Molex (0039012240)S573Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established. |
| Series | Mini-Fit Jr. (0039012240)S573Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established. |
| Exact part / implementation | 0039012240 (0039012240)S573Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V139 Source-scoped identification only. No complete cable assembly, universal mating, pin assignment, safe operating load, installation instruction or independent approval is established. |
Not recorded: Populated contacts, Dimensions / axis, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.
Report a correction to these facts →Bounded facts, visible unknowns
Specifications and limits
| Manufacturer-specific descriptor | 4.20 mm nominal pitch; example 874272002, right-angle, 20 circuits [C358A] |
|---|---|
| Mechanical dimensions | Only the nominal series pitch/product descriptor in source text; no independent manufacturing or tolerance validation. |
| Engineering pinout | Source-checked engineering profile available; independent review pending. Open engineering profile → |
| Verified device list | Not included. Check exact device and accessory documentation. |
A boundary, not an omission to guess around.
Molex identifies Mini-Fit Jr. as a 4.20 mm nominal-pitch connector family; the cited 874272002 example is a right-angle, 20-circuit PCB header. Mini-Fit is a named family; a power-cable label or 4.20 mm measurement cannot authorize a mating or PSU wiring assumption.
Before you connect
What to check
- Find the exact manufacturer designation on the physical part or device bill of materials.
- Confirm the complete mating part number, termination, orientation and cable construction using the current maker drawing.
- Verify signals, cable assignment and system ratings from the exact equipment manual; do not energize an unverified assembly.
Before connection or replacement
Find the exact manufacturer designation on the physical part or device bill of materials. Confirm the complete mating part number, termination, orientation and cable construction using the current maker drawing. Verify signals, cable assignment and system ratings from the exact equipment manual; do not energize an unverified assembly.
Evidence and engineering boundary
Manufacturers describe the series or named example, not a complete compatible harness, exact pin assignment, or electrical approval. No independent hardware, manufacturing drawing, license or device-specific test was performed. A physically similar housing or cable can have different retention, terminal geometry, wiring or ratings. Never infer an electrically safe assembly from the series name or pitch.
Your next step
Move from the form to the requirement.
The source trail
Evidence for this page
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
Back to first citation ↑
C358ASource checked · pending review
Molex product 874272002 is described as a Mini-Fit Jr. right-angle PCB header with 20 circuits and 4.20 mm nominal pitch.
Molex · Mini-Fit Jr. header product 874272002 ↗S468: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
C358BSource checked · pending review
The cited Molex product is a PCB header example, not a universal pinout, replacement cable or safety endorsement for a power supply.
Molex · Mini-Fit Jr. header product 874272002 ↗S468: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
C358CSource checked · pending review
Molex 0039012240 is listed as a natural-color receptacle housing with 24 circuits, two rows and 4.20 mm mating pitch; these are housing-level catalogue fields, not an ATX cable-assembly identity.
Molex · 0039012240: housing-level identity and independent fields ↗S573: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
C358DSource checked · pending review
For 0039012240, Molex lists locking to the mating part and polarization as Yes while keying to the mating part is No. The independently labelled fields must not be silently merged into one compatibility statement.
Molex · 0039012240: housing-level identity and independent fields ↗S573: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
C358ESource checked · pending review
The exact 0039012240 product page links an oblique image of a bare housing with a central latch; the photograph does not depict a wired ATX cable assembly or establish a current drawing revision.
Molex · 0039012240: housing-level identity and independent fields ↗S573: full source recordMolex · 0039012240: manufacturer-linked oblique photograph ↗S574: full source recordInspect review dependencies → (private workspace)Back to first citation ↑
Suggest a correction to this field note →C358FSource checked · pending review
Molex 0039012240: coupling: Lock to mating part: yes; keying: Polarized to mating part: yes; keyed to mating part: no; shell: Natural nylon housing. Only Molex 0039012240; no family-wide generalization.
Molex · 0039012240: housing-level identity and independent fields ↗S573: full source recordInspect review dependencies → (private workspace)Follow the connection
Related field notes
Molex Fit wire-to-board Connector
Molex Micro-Fit 3.0 connector family
Micro-Fit 3.0 is not Mini-Fit Jr.; similar-looking headers do not prove mating or a safe power harness.
Open field note
Storage Connector
U.2 / U.3 SFF-8639 68-position drive connector
A shared drive-edge family does not mean every host, backplane and drive supports the same transport mode.
Open field note
PC power Connector
12V-2x6 16-circuit PCIe power connector
Physical family recognition never establishes safe GPU power delivery. Cable construction, PSU/device requirements, seating and the exact specification remain safety-critical.
Open field note
JST wire-to-board Connector
JST PH wire-to-board connector family
A measured 2.0 mm pitch or white housing alone cannot establish a genuine JST PH mating pair or wiring.
Open field notePut this field note to work.
Add to discovery trayRecord an unsaved candidate (private workspace)
Candidate selection does not confirm the identity or capabilities of your physical item.
Use this reference
From identity to the right next question
Miniature repair / Several identities remain possible
Mini-Fit or Micro-Fit?
Compare the named component series, component role and manufacturer part number before looking for a counterpart.
P358 reference · P359 reference · Inspect named view (private workspace)
A family resemblance is not a documented mating pair.
Miniature repair / Unconfirmed candidate
Two Mini-Fit examples, not a mating pair
Keep the depicted eight-position housing separate from the twenty-position header example.
P358 reference · Inspect named view (private workspace)
The two depicted examples are explicitly not a mating pair; the family name does not override that exclusion.
MAIN & AUXILIARY POWER / SOURCE-QUALIFIED IDENTITY
Keep the component and application separate.
A housing is not a wired cable
Molex 0039012240
- Role
- Bare receptacle housing in the named part photo.
- Distinction
- 24 circuits / two rows / 4.20 mm mating pitch are catalogue fields.
- Established
- The central latch and broad exterior can be studied without inventing cavity keying or a completed ATX harness.
- Not established
- Contact selection, wire assembly, exact mating component and current drawing revision.
- Next check
- Keep the named housing separate from any claimed application or complete cable.
Evidence, component scope & limits
0039012240: housing-level identity and independent fields ↗
Physical Specifications: circuits, rows, pitch, gender, color, locking, polarization and keying. The page also displays a Limited Information Available notice.
S573 · observation date 2026-10-12. An exact named receptacle housing, not a completed ATX harness. Polarized, keyed and locking are separately labelled properties; a positive field is not a wiring or interchangeability verdict.
0039012240: manufacturer-linked oblique photograph ↗
Image 1 on the exact part page, file 0039012240_hires.jpg; visually inspected full image.
S574 · observation date 2026-10-12. The photograph shows a pale housing with a central latch and elongated repeated housing structure. The original study retains only qualitative exterior features; cavity key geometry, contacts, dimensions and revision are omitted.
The observation date is not a drawing revision. No wiring, fit or installation approval.
Locking, polarization and keying are separate
Molex 0039012240 / physical fields
- Role
- Independently labelled product properties.
- Distinction
- Lock: Yes. Polarized: Yes. Keying to mating part: No.
- Established
- Do not collapse the three labels into a single claim that a cable is safe or interchangeable.
- Not established
- Manufacturer definitions, complete mating pair and application approval.
- Next check
- Use each field as labelled and obtain exact mating documentation.
Source-field reference; no physical view assigned to this row.
Evidence, component scope & limits
Observed . C358D
0039012240: housing-level identity and independent fields ↗
Physical Specifications: circuits, rows, pitch, gender, color, locking, polarization and keying. The page also displays a Limited Information Available notice.
S573 · observation date 2026-10-12. An exact named receptacle housing, not a completed ATX harness. Polarized, keyed and locking are separately labelled properties; a positive field is not a wiring or interchangeability verdict.
The observation date is not a drawing revision. No wiring, fit or installation approval.