Brand:​ Dell

Model:​ D685EF-00

Product Type:​ Internal switching power supply

Continuous Output Power:​ 685 W

AC Input:​ 100–240 VAC

Input Current:​ Approximately 9.7 A nominal

Frequency:​ 50/60 Hz

DC Outputs:​ Multiple +12 V outputs, +3.3 V, +5 V, -12 V, and standby output

Per-Rail Output:​ Approximately 18 A per listed +12 V rail

Standby Output:​ Approximately 4 A

Efficiency:​ 80 PLUS Gold

Active PFC:​ Yes

Form/Service Feature:​ Hot-swap-capable unit for supported Dell Precision chassis

Physical Size:​ Approximately 160 × 63 × 225 mm, per one available specification

Alternate Size Reference:​ 304.8 × 228.6 × 101.6 mm, per another available specification

Published size references differ. Verify the supply against the exact chassis and power-supply sled before ordering.

Multi-Rail DC Power:​ Supplies the workstation motherboard, processors, graphics cards, and storage devices.

Active Power Factor Correction:​ Improves input current quality.

Energy Efficiency:​ 80 PLUS Gold efficiency reduces energy loss and heat output.

Protection Circuits:​ Provides overvoltage, overcurrent, overtemperature, and short-circuit protection.

Standby Output:​ Maintains auxiliary power for wake and standby functions.

Hot-Swap Form Factor:​ Supports service replacement in compatible Dell Precision chassis.

Dell Precision workstations:​ T3600, T3610, T5600, T5610, and compatible systems

CAD and engineering:​ High-performance design and simulation workstations

Content creation:​ Rendering, video production, and graphic design

Scientific computing:​ Data analysis and technical workstation platforms

Chassis:​ Steel enclosure

Internal Circuit Board:​ FR4 printed circuit board

Semiconductors:​ Power transistors, diodes, controllers, and switching components

Passive Components:​ Inductors, transformers, and capacitors

Cooling:​ Internal axial fan and heat-transfer components

Output Harness:​ Copper conductors with insulated connectors

Enclosure Type:​ Rectangular internal power supply

Mounting:​ Installs in the dedicated power-supply bay of compatible Dell Precision workstations

Cooling:​ Internal fan with temperature-responsive operation

Connectors:​ Proprietary or system-specific motherboard, CPU, PCIe, and storage connectors

Service Feature:​ Hot-swap handle or sled design in supported systems

AC mains voltage passes through filtering and active power-factor correction before being converted to a high-voltage DC bus. High-frequency switching circuits then transform and regulate the voltage to produce the required +12 V, +5 V, +3.3 V, and auxiliary DC outputs. Monitoring and protection circuits supervise voltage, current, and temperature.

System Compatibility:​ Use only in Dell Precision workstations and chassis supported by the D685EF-00.

Correct Sled:​ Confirm the power-supply sled, connector layout, and retention mechanism.

Power Removal:​ For non-hot-swap service, turn off the workstation and disconnect AC power.

Secure Seating:​ Align the unit with the bay guides and ensure the connector and latch engage fully.

Cable Routing:​ Connect every required power cable and avoid pinching conductors.

No Universal Replacement:​ This is not a generic ATX power supply; connector and sled compatibility must be confirmed.

Electrical Hazard:​ Internal capacitors may retain charge after disconnection.

Ventilation:​ Maintain adequate airflow and keep cooling openings clear.

Environmental Limits:​ Operate within the workstation manufacturer’s specified ambient temperature and humidity range.

Visual Inspection:​ Inspect the unit for damaged connectors, burnt components, or unusual odors before reuse.