300W Platinum Power Supply for Precision 3460 3660 OptiPlex 3000 5000 7000 XE4 XPS 8950

300W 80 PLUS Platinum internal power supply for compatible Precision workstations, OptiPlex business desktops, and select XPS 8950 systems. This narrow proprietary PSU includes a fixed 8-pin system-board cable and two long 4-pin processor-power cables. It is designed for systems requiring the same 82mm x 62mm x 184mm enclosure, mounting points, cable lengths, connector layout, and electrical specifications.

Technical Specifications

• Primary Part Number: 1GJMK
• Part Type: Internal desktop / workstation power supply
• Maximum Output Power: 300W
• Efficiency Rating: 80 PLUS Platinum / 92% efficient system specification
• Form Factor: Proprietary narrow D13 SFFM-style power supply
• Dimensions: Approx. 82mm x 62mm x 184mm
• Dimensions in Inches: Approx. 3.23" x 2.44" x 7.24"
• Nameplate AC Input: 100-240V~, 4.2A, 50-60Hz
• Published System Input Range: 90-264V AC, 47-63Hz
• Common DC Output +12VA1: 18A
• Common DC Output +12VA2: 18A
• Common DC Output +12VB: 18A
• System-Board Connector: 1x proprietary 8-pin connector
• System-Board Cable Length: Approx. 11.5"
• Processor Connectors: 2x 4-pin +12V CPU power connectors
• Processor Cable Lengths: Approx. 25" each
• PCIe Graphics Connectors: None
• SATA Power Connectors: None directly from the power supply
• Cable Design: Non-modular with permanently attached output cables
• AC Power Inlet: IEC 60320 C14
• Required AC Cable: NEMA 5-15P to IEC C13 power cord for standard North American outlets
• Cooling: Integrated internal fan
• Operating Temperature: 5°C to 45°C / 41°F to 113°F
• Storage Temperature: -40°C to 70°C / -40°F to 158°F
• Installation Type: Internal chassis-mounted power supply
• Application Type: Small form factor and tower desktop / workstation PSU replacement

Interchangeable / Replacement Part Numbers

1GJMK, 3XY3J, 42M49, 6R2MV, AC300EPS-01, CNHDM, D300E019P, D300E022P, D300EPS-00, DPS-300AB-118 A, DPS-300AB-123 A, H300EPS-01, HD2W8, L300EPS-01, MJXT6, PA-2301-61DA, PA-2301-6DA, PCL010, W6PWK

The listed identifiers refer to the narrow 300W 80 PLUS Platinum family with an 8-pin system-board connector and two 4-pin processor connectors. Always compare the enclosure dimensions and complete cable layout before installation.

⭐ Recommended Accessory - C13 AC Power Cord

This power supply uses a standard IEC C14 AC inlet. Add the cable below if the original AC power cord is missing, damaged, or not included with the replacement PSU.

⭐ 5120P - 6FT 125V NEMA 5-15P to IEC C13 Power Cord - Grounded North American AC power cable for connecting the power supply to a standard wall outlet. Sold separately.

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on the system’s specific configuration. Verify the original power-supply part number, 300W rating, 8-pin system-board connector, dual 4-pin processor connectors, dimensions, cable lengths, and mounting points before installation.

✔️ Precision Small Form Factor Workstations: Precision 3460 Small Form Factor / T3460, Precision 3460XE Small Form Factor - 300W Platinum configurations
✔️ Precision Tower Workstations: Precision 3660 Tower / T3660, Precision 3660XE Tower - 300W Platinum configurations
✔️ OptiPlex 3000 Models: OptiPlex 3000 Small Form Factor, OptiPlex 3000 Tower - 300W Platinum configurations
✔️ OptiPlex 5000 Models: OptiPlex 5000 Small Form Factor, OptiPlex 5000 Tower - 300W Platinum configurations
✔️ OptiPlex 7000 Models: OptiPlex 7000 Small Form Factor, OptiPlex 7000 Tower - 300W Platinum configurations
✔️ OptiPlex XE4 Models: OptiPlex XE4 Small Form Factor, OptiPlex XE4 Tower - 300W Platinum configurations
✔️ Current-Generation OptiPlex 7010 Models: OptiPlex 7010 Small Form Factor, OptiPlex 7010 Small Form Factor Plus, OptiPlex 7010 Tower configurations using the narrow 300W D13 power supply
✔️ XPS Desktop: XPS 8950 systems using one of the listed 300W part numbers and the same 8-pin plus dual 4-pin cable layout

☑️ Key Features

☑️ 300W maximum output for compatible desktop and workstation systems
☑️ 80 PLUS Platinum efficiency rating
☑️ Narrow 82mm x 62mm x 184mm chassis-specific enclosure
☑️ Proprietary 8-pin system-board power connector
☑️ Two long 4-pin +12V processor-power connectors
☑️ Permanently attached non-modular output cables
☑️ Compatible with supported small form factor and tower chassis
☑️ Wide-range AC input for compatible regional power sources
☑️ Standard IEC C14 inlet accepts an IEC C13 AC power cord
☑️ Direct-fit replacement when the original part number and complete layout match

⚙️ Fit Notes

✓ This is a proprietary narrow 82mm x 62mm x 184mm power supply, not a standard ATX, SFX, TFX, or Flex ATX replacement. It requires the proprietary 8-pin system-board connector, not a standard 24-pin connector.
✓ Match the original power-supply part number whenever possible. Do not order by wattage or exterior appearance alone.
✓ This PSU has no auxiliary PCIe graphics-power connector and is intended only for graphics cards that receive all required power through the PCIe slot.
✓ Drive power is supplied through the system board and separate chassis-specific SATA power cables. Those cables are not included unless shown.
✓ Precision 3660 and XPS 8950 systems were also offered with higher-wattage power supplies using different connectors. Verify the original PSU part number and cable layout carefully.
✓ “T3460” is a reseller abbreviation for the Precision 3460 Small Form Factor, not a separate tower model.
✓ Current-generation OptiPlex 7010 systems must not be confused with the legacy 2012 OptiPlex 7010. This PSU is also not intended for OptiPlex Micro or Thin Client systems.
✓ The AC power cord is not included unless shown. A compatible IEC C13 power cord is available separately above.