The HP Vectra 13-pin power supply connector is a proprietary single-row Molex-like housing used on early HP Vectra desktop and minitower systems from the Pentium and Pentium MMX era, predating the 24-pin proprietary connectors that HP adopted on later Vectra VL5 Series 5 and VL6 6 machines. It carries the main supply rails (±5 V, ±12 V, −5 V), a standby rail, and the PWR_ON and Power Good control signals, but omits 3.3 V entirely from the 13-pin body — a separate 6-pin Molex auxiliary connector supplies +3.3 V, with black wires for ground and brown wires for the +3.3 V rail. Because the signal assignments and physical keying differ from the Intel ATX specification, a standard ATX power supply cannot be substituted without risk of damage to the system board.
Single-in-line Molex-like 13-hole connector with one hole empty. Looking on the metal latches side of the connector, wires UP, “1st” pin is on the LEFT. PSU‘S Additional 6 pin Molex 3.3V connector pinout is BLACK WIRES=GND, BROWN WIRES=+3.3V
| Pin | Name | Color | Description |
|---|---|---|---|
| 1 | -5V | purple | -5V 0.2A |
| 2 | -12V | green | -12V 0.5A |
| 3 | +5V | red | +5V |
| 4 | +5V | red | +5V |
| 5 | +5V | red | +5V |
| 6 | +5V_STBY | orange | +5V Standby, seems not more than 50mA |
| 7 | +12V | yellow | +12V |
| 8 | GND | black | |
| 9 | GND | black | |
| 10 | GND | black | |
| 11 | PWR_ON | white | Power ON from motherboard, ON=LOW (short it to GND for power on) |
| 12 | empty | pin removed, closed with a plastic plug | |
| 13 | PG | blue | Power Good to motherboard, PG=Hi |