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Technical Reference Guide www.hp.com 7-3
Power and Signal Distribution
7.2.2 MT Power Supply
The MT form factor comes standard with a 300-watt, passive-PFC power supply unit with the
specifications and cabling as indicated in the following table and figure.
NOTES:
Total continuous output power should not exceed 300 watts. Maximum surge power (<
10 seconds) should not exceed 320 watts.
[1] Minimum loading requirements must be met at all times to ensure normal operation and specification compliance.
[2] Maximum surge duration for +12Vcpu is 1 second with 12-volt tolerance +/- 10%.
NOTES:
All + and - values are VDC.
RTN = Return (signal ground)
GND = Power ground
RS = Remote sense
POK = Power ok (power good)
[1] This row represents pins 13–24 of connector P1.
Figure 7-3. MT Power Cable Diagram
Table 7-2.
MT 300-Watt Power Supply Unit Specifications
Range or
Tolerance
Min.
Current
Loading [1]
Max.
Current
Surge
Current [2]
Max.
Ripple
Input Line Voltage:
115–230 VAC (auto-ranging) 90–264 VAC -- -- -- --
Line Frequency 47–63 Hz -- -- -- --
Input (AC) Current -- -- 6.0 A -- --
+3.3 VDC Output +
4 % 0.10 A 16.0 A 16.0 A 50 mV
+5.08 VDC Output +
3.3 % 0.30 A 19.0 A 19.0 A 50 mV
+5.08 AUX Output +
3.3 % 0.00 A 2.00 A 2.00 A 50 mV
+12 VDC Output + 5 % 0.10 A 11.0 A 11.0 A 120 mV
+12 VDC Output (Vcpu) +
5 % 0.10 A 11.5 A 11.5 A 120 mv
-12 VDC Output +
10 % 0.00 A 0.15 A 0.15 A 200 mV
Conn Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9
Pin
10
Pin
11
Pin
12
P1 +3.3 +3.3 RTN +5 RTN +5 RTN POK 5 aux +12 +12 +3.3
P1 [1] +3.3 -12 RTN PS On RTN RTN RTN nc +5 +5 +5 RTN
P3 RTN RTN VccP VccP
P4, 5, 7, 8 +12 RTN +5.08 RTN +3.3
P9 +5 RTN RTN +12
Power Supply
Unit
P1
P5
P1
13
1
12
P4, P5, P7, P8
24
12
3
4
1
5
43
2
P9
P3
P4
P3
1
3
2
4
P8
P7
P9