Mechanical
336521
51
•
Pin Contact Base Material: Brass alloy or equivalent
•
Pin Contact Plating: Sn alloy
•
Flammability: UL94V-1 Minimum - Material certification or certificate of compliance
is required with each lot to satisfy the Underwriters Laboratories follow-up service
requirements.
•
Lead Free Soldering: Connector must be compatible with lead free soldering process
Table 5-4: PCIe* 2x3 Auxiliary Power Connector Pin Assignment (75 Watts)
Pin
Signal
Color
1
Pin
Signal
Color
1
1
+12V3/V4
Yellow
4
COM
Black
2
+12V3/V4
Yellow
5
Sense
Black
3
+12V3/V4
Yellow
6
COM
Black
NOTES:
1.
Wire Size: 18 AWG
2.
The Sense pin on the 2x3 auxiliary power connector must be connected to ground
either directly in the power supply or via a jumper to an adjacent ground pin in the
connector. This pin is used by a PCI Express* 2x3 150 W/225 W/300 W Add-in Card
to detect whether the 2x3 auxiliary power connector is attached.
5.2.2.4.2
PCI Express* (PCIe*) 2x4 Auxiliary Power Connector
(Recommended)
The 2x4 Auxiliary Power Connector consists of a
PCB_ Header
, mounted on a PCIe*
Add-in Card, and a mating 2x4
Cable Plug
harness
.
The 2x4 PCB header is designed to
accept both the mating 2x4 Cable Plug as well as the 2x3 cable plug, for
backward-compatibility. The Add-in Card PCB Header is keyed to ensure that a 2x3
cable plug from a PSU will be properly aligned when it is mated with a 2x4 PCB
Header. Two Sense pins in the 2x4 PCB header allow the PCIe* Add-in Cards to detect
the power available from the cable. The 2x4 Cable Plug asserts (grounds) two sense
pins to indicate that 150 watts are available to the PCIe* Add-in Card through this
cable, while the 2x3 plug asserts only one sense pin, to signal that only 75 W may be
drawn from the cable. The 2x4 Cable Plug has the following requirements:
•
Current Rating: 7.0 A per pin/position maximum to a 30°C T-Rise above ambient
temperature conditions at +12 VDC with all eight contacts energized
•
Mated Connector Retention: 30.00 N minimum when plug pulled axially
Cable Assembly Contact and Housing Details:
•
Housing Material: Thermoplastic; Note that this connector has unique mechanical
keying to avoid wrongful insertion of cable plug meant for different types of
connectors.
•
Pin Contact Base Material: Brass alloy or equivalent
•
Pin Contact Plating: Sn alloy
Summary of Contents for ATX 3.0
Page 69: ...LFX12V Specific Guidelines 2 0 336521 69 Figure 12 2 Mechanical Details...
Page 70: ...LFX12V Specific Guidelines 2 0 70 336521 Figure 12 3 PSU Slot Feature Detail...
Page 71: ...LFX12V Specific Guidelines 2 0 336521 71 Figure 12 4 Recommended Chassis Tab Feature...
Page 77: ...SFX12V Specific Guidelines 4 0 336521 77 Figure 14 3 Top Mount Fan Profile Mechanical Outline...
Page 82: ...SFX12V Specific Guidelines 4 0 82 336521 Figure 14 10 PS3 Mechanical Outline...
Page 87: ...TFX12V Specific Guidelines 3 0 336521 87 Figure 15 6 Suggested Mounting Tab chassis feature...
