PC Power Connectors Part Cross-Reference
Last update: Jan 6 2025
Visual index
ATX 2.0 24-pin power
Type: Molex Mini-Fit Jr series
Pin Pitch: 4.20 mm
Board header
Part numbers:
| Manufacturer | P/N | Drawing |
|---|---|---|
| Molex | 44206-0001 (both pegs), 44206-0002 (no pegs), 44206-0007 (peg 2 only) | 442060007_sd.pdf |
| Amphenol | 10127820-2422LF (no pegs), 10127820-2422PLF (both pegs) | 10127820.pdf |
I think most boards will use the no pegs version, but the single peg version seems to be slightly cheaper and it's easy to clip off the peg.
AT P8/P9 power
Type: Molex 8619 series, KK 3.96 series?
Pin Pitch: 3.96 mm
Board header
| Manufacturer | P/N | Drawing |
|---|---|---|
| Molex | 36642-0001 (polarizing slot at pin 4), 14-58-0106 (obsolete) | 366420001_sd.pdf |
| 4UCon | 20124, 02221, 02222 (unavailable?) | webpage |
| Boom | P8P9 (unavailable) |
Molex's 36642-0001 is only available with the polarizing slot on pin 4, so you may have to break some bits to make this work with old AT P8/P9 connectors. It mates just fine otherwise, though.
4UCon's page has scant information and the PDFs seem wrong based on the descriptions. I haven't confirmed any of it.
Plug Housing
| Manufacturer | P/N | Drawing |
|---|---|---|
| Molex | 90331-XXXX | 903311003_sd.pdf |
| 4UCon | 02220 (unavailable?) | webpage |
I'm not sure exactly which Molex part number is correct. One PSU I have seems to have -XX04 (keys on 1, 3, and 4) on both P8 and P9, and another appears to have -XX03 (key on pin 4) on P8 and -XX02 (key on pin 1) on P9. I suspect there wasn't a lot of standardization on keying here, and people just made it work.
Terminals
24-18 AWG
Molex 2478 series
drawing: 008520072_sd.pdf
material details
| Material | bulk P/N | reel P/N | obsolete P/N |
|---|---|---|---|
| Brass/Tin | 08-50-0105 | 08-50-0106 | 08-50-0276 |
| Phosphor Bronze/Tin | 08-52-0071 | 08-52-0072 | |
| Brass/0.51um Gold | 08-56-0105 | 08-56-0106 | |
| Phosphor Bronze/0.51um Gold | 08-58-0121 | 08-58-0122 | |
| Phosphor Bronze/0.38um Gold | 08-65-0114 | 08-65-0115 | |
| Brass/Copper/Tin | - | 39-00-0286 | 2478T |
| Brass/Nickel/Gold | - | - | 39-00-0344, 2478GL |
4-pin "Molex" drive power
Type: TE Commercial MATE-N-LOK
Pin Pitch: 5.08 mm (0.2 in)
Commonly used on 5.25" floppy drives, older hard drives, optical drives, and other high power peripherals.
Note that on this connector, the part that plugs into the device is the "socket". Inside the power plug are hollow sockets and the device jack has pins.
Socket Housing
| Manufacturer | P/N | Drawing |
|---|---|---|
| TE | 1-480424-0 | ENG_CD_480424_N1.pdf |
Socket Terminals
24-18 AWG
TE - 60617 (bulk), 61314 (reel)
drawings: ENG_CD_60617_V2.pdf,
ENG_CD_61314_AB5.pdf
material details
| Material | bulk P/N | reel P/N |
|---|---|---|
| Brass/Tin | 60617-1 | 61314-1 |
| Brass (no finish) | - | 61314-2 |
| Phosphor Bronze/Tin | 60617-4 | 61314-4 |
| Brass/Gold (plated in mating area and wire barrel) | - | 61314-5 |
| Phosphor Bronze/Gold (plated only on mating area) | 60617-6 | 61314-6 |
| Brass/Gold (plated only on mating area) | - | 61314-7 |
20-14 AWG
TE - 60619 (bulk), 61117 (reel)
drawings: ENG_CD_60619_T2.pdf,
ENG_CD_61117_AC3.pdf
material details
| Material | bulk P/N | reel P/N |
|---|---|---|
| Brass/Tin | 60619-1 | 61117-1 |
| Brass (no finish) | - | 61117-2 |
| Phosphor Bronze/Tin | 60619-4 | 61117-4 |
| Brass/Gold (plated in mating area and wire barrel) | 60619-5 | 61117-5 |
| Phosphor Bronze/Gold (plated in mating area and wire barrel) | 60619-7 | 61117-6 |
| Brass/Gold (plated only on mating area) | - | 61117-7 |
There are other compatible part numbers for different wire gauges.
Plug Housing (wire-to-wire)
This housing accepts pin terminals, and is commonly used for extenders and Y-cables.
| Manufacturer | P/N | Drawing |
|---|---|---|
| TE | 1-480426-0 | ENG_CD_480426_H1.pdf |
Also available in black (1-480426-9).
Plug Terminals
24-18 AWG
TE - 60618 (bulk), 61116 (reel)
drawings: ENG_CD_60618_S2.pdf,
ENG_CD_61116_AG5.pdf
material details
| Material | bulk P/N | reel P/N |
|---|---|---|
| Brass/Tin | 60618-1 | 61116-1 |
| Brass (no finish) | - | 61116-2 |
| Phosphor Bronze/Tin | 60618-4 | 61116-4 |
| Brass/Gold (plated in mating area and wire barrel) | 60618-5 | 61116-5 |
| Phosphor Bronze/Gold (plated in mating area) | 60618-6 | 61116-6 |
| Brass/Gold (plated in mating area) | - | 61116-7 |
TE 24-18 AWG - 60620 (bulk), 61118 (reel)
drawings: ENG_CD_60620_S2.pdf,
ENG_CD_61118_AF3.pdf
material details
| Material | bulk P/N | reel P/N |
|---|---|---|
| Brass/Tin | 60620-1 | 61118-1 |
| Brass (no finish) | - | 61118-2 |
| Phosphor Bronze/Tin | 60620-4 | 61118-4 |
| Brass/Gold (plated in mating area and wire barrel) | 60620-5 | 61118-5 |
| Phosphor Bronze/Gold (plated in mating area and wire barrel) | - | 61118-6 |
| Brass/Gold (plated in mating area) | - | 61118-7 |
As with the sockets, there are many other part numbers for different wire gauges.
4-pin "Berg"/"floppy" power
Type: TE Economy Interconnection Series (Berg's original series is unknown)
Pin Pitch: 2.5 mm
This connector is commonly used on floppy drives, CF-IDE adapters, and other lower-power accessories. Originally created by Berg, now part of Amphenol, though I can find no Amphenol part number for it.
Socket Housing
| Manufacturer | P/N | Drawing |
|---|---|---|
| TE | 171822-4 | missing! |
Also available in black (2-171822-4), blue (4-...), and red (6-... and 8-...).
Socket Terminals
26-20 AWG
TE - 170204 (bulk), 170262 (strip)
drawing: ENG_CD_170262-1_E1.pdf
material details
| Material | bulk P/N | strip P/N |
|---|---|---|
| Brass/Tin | 170204-1 | 170262-1 |
| Phosphor Bronze/Tin | 170204-2 | 170262-2, 170262-3 |
| Phosphor Bronze/Gold | 170204-4 | 170262-4 |
| Brass/Bright Tin | - | 170262-5 |
Similar part numbers 170205 and 170263 are available for 30-26 AWG contacts.
Board Header
| Manufacturer | Housing Material | Contact Material | P/N | Drawing |
|---|---|---|---|---|
| TE | Nylon | Brass/Tin | 171826-4 | ENG_CD_171826_R4.pdf |
Notes
Material and plating
Unsurprisingly, it looks like most contacts you find in the wild are the cheap option - brass/tin. Brass is cheaper but deforms more readily and thus has a limited number of useful mating cycles. Weak contacts can cause heat and possibly fire. But for the number of cycles you'd expect in PC building, brass is probably fine. If you plan on reconnecting things a lot (e.g. if this is a test bench PSU), I recommend getting phosphor bronze instead.
Gold plating is available for most of these contacts, but I don't think it's necessary for basic power applications. Maybe if you were in an environment prone to corrosion, but if that were the case, your PC will have many other problems sooner.