1400W 80 PLUS Platinum Power Supply for ThinkStation P920

This genuine OEM internal power supply is designed for compatible ThinkStation P920 tower workstations using the matching 1400W power-supply assembly. It features automatic AC-voltage sensing, 80 PLUS Platinum efficiency, integrated cooling fans, and a proprietary chassis-mounted connection system.

This listing is specifically for the P920 1400W power-supply family.

Technical Specifications

• Product Type: Internal workstation switching power supply
• Manufacturer Model: DPS-1400EB A
• Maximum Rated Output: 1400W, subject to AC-input requirements
• Low-Line Output Limit: 1125W when input voltage is below 115V
• Nominal AC Input: 100–240V AC, autosensing
• Input Frequency: 50–60Hz
• Published Input-Current Range: 9–15A; follow the installed unit’s rating label
• Efficiency Rating: 80 PLUS Platinum
• Published Efficiency: 92% at 50% load
• AC Inlet: IEC C14
• Required Cord Connection: Grounded IEC C13 equipment connector with suitable voltage and current ratings
• Form Factor: Proprietary ThinkStation P920 internal PSU assembly
• System Connection: Chassis-specific mating connectors; not a standard ATX cable-harness replacement
• Cooling: Integrated dual-fan assembly
• Diagnostic Indicator: Built-in power-supply diagnostic LED
• Installation Type: Removable service assembly; shut down and disconnect AC before replacement
• Primary Application: Compatible ThinkStation P920 tower workstations
• Package Contents: One power-supply assembly; power cord and additional accessories only if expressly included

Electrical and platform specifications follow the P920 technical specifications and official P920 product reference.

Interchangeable / Replacement Part Numbers

54Y8978, 5P50V03187, 5P51D76997, SP50H29490, DPS-1400EB A

⚠️ Critical P720 Compatibility Notice

This 1400W P920 supply is not listed as compatible with ThinkStation P720.

The P720 uses a different power-supply assembly family, with documented 690W, 900W, and 1000W configurations. Matching the ThinkStation name, AC inlet, or general appearance does not establish interchangeability.

Do not order 54Y8978, 5P50V03187, 5P51D76997, SP50H29490, or DPS-1400EB A as a P720 replacement based on an older combined P920/P720 catalog description. P720 power-supply specifications.

⭐➕ Need a Power Supply for ThinkStation P720?

The following 900W P520/P720 power-supply listings are available separately on CPU Medics:

✔️ 54Y8979 900W Power Supply for ThinkStation P520 P720
✔️ DPS-900EB A 900W Power Supply for ThinkStation P520 P720

These are separate P720-family products—not interchangeable P920 1400W supplies. Confirm the original part number and the workstation’s required power capacity before ordering. A 900W unit must not be substituted into a configuration that requires 1000W.

✅ Confirmed Compatibility

Compatibility is limited to ThinkStation P920 systems using the corresponding 1400W assembly and an approved replacement revision.

✔️ ThinkStation P920 Tower: Machine type 30BC
✔️ ThinkStation P920 Tower: Machine type 30BD
✔️ ThinkStation P920 Tower: Machine type 30BV

These machine types are covered by the official P920 user-guide record. Check the complete machine type, serial number, original PSU label, and required revision when selecting a replacement.

Other model families: P720 is excluded. P900, P910, P520, P620, and other ThinkStation systems are not included in this confirmed list because compatibility with this exact assembly was not established. Similar appearance or a reseller’s combined model list is insufficient.

⚠️ AC Input and Available Output

The 1400W designation is the maximum rated output—not the available output under every input condition.

• Below 115V AC: Published maximum output is 1125W.
• For full rated output: Use an input supply meeting the unit’s rating and the workstation’s installation requirements.
• Size the power cord, outlet, power distribution equipment, and UPS for the complete workstation load.
• Follow the rating label on the supplied revision.

The low-voltage limitation is explicitly documented in the P920 product specifications.

☑️ Key Features

☑️ Genuine OEM P920 replacement power-supply assembly
☑️ Maximum rated output of 1400W
☑️ 80 PLUS Platinum efficiency
☑️ Automatic AC-input voltage sensing
☑️ Integrated dual-fan cooling
☑️ Power-supply diagnostic indicator
☑️ Proprietary chassis-mounted connections
☑️ Multiple service and assembly references for replacement identification
☑️ Separate P720 replacement listings linked above

⚙️ Fit and Installation Notes

• Confirm ThinkStation P920, not P720, before ordering.
• Match the original PSU’s complete part number, model, connector arrangement, mounting features, and revision.
• Check serial-specific service requirements before substituting an earlier or later assembly.
• Do not confuse 54Y8978 with 54Y8979; these identify different power-supply families.
• Do not describe the proprietary connector arrangement as a universal ATX connection.
• A removable or slide-in assembly does not establish live hot-swap capability.
• Shut down the workstation and disconnect its AC power cord before removing or installing the supply.
• Never open the PSU enclosure; hazardous stored energy may remain after disconnection.
• Ensure the replacement is fully seated and its retention mechanism is secured.
• Retain the correct system power-distribution cables and required graphics-power adapters.
• Account for the 1125W output limitation when operating below 115V.
• Do not assume the AC power cord or additional cables are included unless stated.