| Symptom | Likely Cause | Fix | |---------|--------------|-----| | No power, fan doesn’t spin | PS_ON not shorted (pin 8) | Short green to black | | PSU shuts down after 1 sec | No load on +5V | Add 5V load (HDD/resistor) | | 3.3V reads 2.7V | Brown sense line open | Tie brown (pin 18) to any orange (+3.3V) | | PC restarts randomly | PW-OK (gray) unstable | Check caps; replace if bulging (common on D220P-01) |
The Dell D220p 01 power supply unit is a robust component designed to provide reliable power to Dell systems. Understanding its pinout is essential for ensuring that power is correctly distributed to all components, supporting system stability and performance. Whether for custom builds, repairs, or upgrades, having a comprehensive understanding of the PSU's pinout and its functionalities is invaluable. As technology continues to evolve, the principles of understanding and working with PSU pinouts remain a fundamental skill for both enthusiasts and professionals in the computing world.
The Dell D220P-01 (often referred to as the DA-2 series) is a popular 220W power supply brick originally designed for ultra-small form factor (USFF) Dell Optiplex systems like the Optiplex 745, 755, and SX280. Because it provides a substantial 12V at 18A in a compact, fanless package, it is widely used by hobbyists for eGPU setups, LED strips, and bench power supplies. Dell D220P-01 8-Pin Connector Pinout
The D220P-01 uses a proprietary 8-pin connector that is mechanically similar to an 8-pin EPS12V motherboard connector but uses a completely different electrical layout.
Important: Never plug this directly into a standard motherboard 8-pin header without modification, as it will likely cause a short circuit or permanent damage. Connector Pin Mapping (Female Receptacle View)
When looking at the female receptacle (on the device side) with the clip/fastener at the bottom, the pins are typically numbered and assigned as follows: Pin Number Description Typical Wire Color 1 +12V 12V DC Output (Rail 1) White / Red 2 +12V 12V DC Output (Rail 2) 3 +12V 12V DC Output (Rail 3) 4 Reserved Logic/Sense (Not usually used) Red / Black 5 Remote (PS_ON) Connect to Ground to Turn On 6 GND Ground / Negative (-) 7 GND Ground / Negative (-) 8 GND Ground / Negative (-) Source: Scribd Wiring Spec, Pinouts.ru. How to Power On the Unit
Unlike standard ATX power supplies that use a green wire for "Power On," the D220P-01 requires a specific signal connection to activate its 12V rails.
Identify the Signal Pin: In many variants, Pin 5 (Remote/Blue) must be shorted to any of the Ground pins (6, 7, or 8) to switch the unit from standby to active mode.
LED Indicator: When the power supply is plugged in but not "on," the LED on the brick is typically Orange (Standby). Once Pin 5 and Pin 6 are shorted, the LED should turn Green, indicating that 12V is now present on Pins 1, 2, and 3.
Alternative Wiring: Some users report that twisting the blue wire with a black ground wire is the simplest way to enable output for DIY projects. Technical Specifications Dell D220P 01 Power Supply Wiring
The Dell D220P-01 Go to product viewer dialog for this item.
(often referred to as the DA-2 series) is a robust 220W external power supply primarily designed for ultra-small form factor (USFF) systems like the Dell OptiPlex SX280 and GX620. Unlike standard ATX power supplies, it delivers a steady 12V output at 18A through a proprietary 8-pin connector, making it a favorite for DIY enthusiasts building eGPUs or LED displays. Technical Specifications Input Voltage: 100-240V AC, 50-60Hz.
Output Rating: 12V DC at 18A, providing roughly 216W to 220W of total power.
Protection Features: Includes OVP (Over Voltage), OCP (Over Current), SCP (Short Circuit), and OTP (Over Temperature) protections. Connector: Proprietary 8-pin DIN-style plug (DA-2 style). 8-Pin Connector Pinout
According to technical documentation and multimeter testing, the 8-pin female receptacle (viewed head-on with the clip at the bottom) typically follows this configuration: Pin Number Wire Color (Internal) 1 Remote + (Sense/Reserved) 2 3 4 5 Remote (Signal/Power On) 6 Ground (GND) 7 Ground (GND) 8 Ground (GND) Operational Note: "Power On" Mechanism Go to product viewer dialog for this item.
does not output full power immediately upon being plugged in. To activate the 12V output (changing the status LED from orange to green), the Remote Signal (Pin 5) must be shorted to Ground (Pin 6). Warnings and Compatibility
EPS Compatibility: While the connector is mechanically similar to an 8-pin EPS12V plug, they are not electrically compatible. Plugging a
directly into a standard motherboard can cause catastrophic failure or fire due to reversed polarity.
Modifications: For DIY use, many users cut the cable to access the internal wires. For high-current applications (over 6A), it is recommended to join multiple wires of the same type (e.g., all three whites for positive) to handle the 18A load safely.
Are you planning to use this power supply for a standard Dell desktop or a custom DIY project like an eGPU? Dell D220P 01 Power Supply Wiring
The Dell D220p-01 power supply pinout was the only thing standing between Silas and the survival of the sector. 🔌 The Darkened Server The Crisis: A sudden power surge fried the main grid. Dell D220p 01 Power Supply Pinout 2
The Casualty: The colony's central air-filtration database went dark. The Backup: A pile of legacy, proprietary Dell hardware.
Silas stared at the glowing soldering iron in his hand. Outside the heavy blast doors of the server room, the air was already growing thick and metallic. He had found a pristine Dell D220p-01 power brick in the salvage bin, but its weird, proprietary 8-pin connector wouldn't fit the standard custom terminal block of the backup database.
If he wired it wrong, he would fry the hard drives containing the atmospheric algorithms. If he did nothing, they would suffocate. 🛠️ The Deciphering
He flipped the heavy black brick over, squinting at the fine print. No diagrams. No legends. Just a sleek, uncaring plastic casing. The Clock: 14 minutes of breathable air remained.
The Tool: A battery-powered multimeter with a cracked screen.
The Goal: Find the three live 12-volt rails and the ground pins.
Silas hacked the proprietary connector off with a pair of wire cutters, exposing a bundle of thick wires. He took a deep breath, trying to keep his hands from shaking. He powered on the brick and began probing the exposed ends.
Red probe to wire one. Black probe to wire two. Zero volts.He moved to the next. Zero volts.
"Come on," he whispered. The power supply was in standby mode. He knew how these old proprietary units worked; they required a specific handshake—a "remote on" signal—to actually bridge the circuit and push the heavy current. He had to trick the brick into thinking it was plugged into its original system. ⚡ The Spark of Life
With 8 minutes left, he found it. By jumping a high-impedance resistor between a 5-volt standby line and the remote-enable pin, he heard a distinct, beautiful click from inside the Dell brick. The internal fan whirred to life. He measured again. Pins 1, 2, 3: Solid 12-volt power. Pins 5, 6, 7: Return grounds.
His hands moved in a blur of solder and heat-shrink tubing. He fused the 12-volt lines together and bolted them to the positive terminal of the database. He did the same with the grounds. He flipped the breaker.
The ancient hard drives spun up with a loud, grinding whine. Status lights blinked from amber to a steady, beautiful green. A low hum filled the room as the heavy air scrubbers outside groaned back to life, pushing a wave of fresh, cool oxygen through the vents.
Silas collapsed against the server rack, clutching the warm Dell power brick to his chest like a trophy.
Dell D220P-01 (part of the DA-2 Series ) is a 220W external power supply used primarily for Ultra Small Form Factor (USFF) Dell Optiplex systems like the SX280, GX620, and 700-series. Technical Specifications 100–240V AC, ~4A, 50–60Hz. 12V DC at 18A (Total ~216–220W). Connector: Proprietary 8-pin Molex-style plug (4.20mm pitch). 8-Pin Connector Pinout The following pinout describes the female receptacle
(viewed from the front, with the plastic clip on the bottom). Wire Color Signal/Description Remote + / Reserved Often unused or high-impedance sense. Main power output. Main power output. Main power output. Remote Ground / ON Shorting this to GND (Pin 6) turns the PSU on. Ground (-) Power and signal return. Ground (-) Power and signal return. Ground (-) Power and signal return. Note on Activation:
To use this PSU for custom projects (like powering an eGPU), you must bridge Pin 5 (Remote) Pin 6 (Ground)
. This changes the status LED from amber (standby) to green (active) and enables the 12V output. Wiring & Modification Guides eGPU Power:
Enthusiasts often split this plug into standard 6-pin or 8-pin PCIe connectors. Warning: Never plug this directly into a standard PC motherboard (EPS12V), as the voltages are reversed and will cause damage. Custom Projects:
If cutting the cable, you will typically find 3 white wires (+12V), 3 black wires (GND), 1 blue wire (Remote), and 1 red wire (Sense/Reserved). Mechanical Compatibility: The plug is mechanically similar to an 8-pin EPS12V connector but is electrically unique.
The fluorescent lights of the repair shop hummed in B-flat, a drone that Elias had tuned out years ago. His workspace was a chaotic mosaic of logic boards, solder splatters, and discarded heat sinks. But in the center lay the artifact. | Symptom | Likely Cause | Fix |
It was a Dell D220P-00, a heavy, beige brick of a power supply from an era when computers were built like tanks and sounded like jet engines.
"You’re wasting your time, Elias," said Sarah, leaning against the doorframe. She held a tablet, scrolling through a manifest of modern, surface-mount components. "That thing belongs in a museum, or a landfill. It’s a proprietary brick. You can’t even turn it on without the specific motherboard it was married to. The pinout is a nightmare."
Elias didn't look up. He adjusted his magnifying headset, peering at the 24-pin connector. It was a sea of colorful wires stopping abruptly at a plastic housing that refused to mate with anything modern.
"It’s not waste, Sarah," Elias murmured, his voice gravelly. "It’s a puzzle. The 'D220p-01' revision. They changed the standby logic in this version. People think it’s just a paperweight."
He picked up his multimeter. He didn't need the schematics; he had the internet, specifically a dusty corner of a vintage computing forum titled: “Dell D220p 01 Power Supply Pinout 2: The Lost Diagram.”
Most power supplies were standard. ATX. AT. Easy. But Dell, in their infinite wisdom in the early 2000s, had decided to rewire the universe. The first pinout he found was for the D220P-00. It didn't match. The colors were different. The gray 'Power Good' wire was in the wrong house.
"Pinout 2," Elias whispered. "That’s the key."
He pulled up the grainy JPEG on his dusty laptop. It was a low-resolution image, likely scanned from a service manual twenty years ago.
But the diagram had a jagged red arrow pointing to a specific wire—a purple one on the connector's edge.
"Proposed revision," Elias read the forum note aloud. "Rearranged sensing lines. If you jumper it wrong, you don't just get no power. You feed 12 volts into a 5-volt rail and fry the capacitators. Spectacularly."
"So why bother?" Sarah asked, walking over. She looked at the tangle of wires. "You can buy a brand new 500-watt supply for thirty bucks."
"Because this one was built by human hands, not a robot swarm," Elias said, stripping the insulation off a small jumper wire. "And because the client wants to recover data from a Dimension 8100. A machine that holds the only photos of his late father. The motherboard is dead, but the hard drive spins. I need this power supply to wake up the drive without the motherboard."
He took a deep breath. The "Paperclip Test" was the standard way to jump a PSU—connecting the green wire to a black ground. But on the D220p-01, the forum warned, the green wire was a decoy. The real switch was the purple wire, repurposed in this revision.
"Here goes," Elias muttered.
He twisted the jumper wire, connecting the purple wire (Pin 9 in this strange universe) to a black ground.
Silence.
Then, a click.
Whirrrrr.
The fan inside the beige brick shuddered to life. It wasn't the smooth whisper of modern cooling; it was a heavy, authoritative wind. A small LED on the circuit board flickered green. The 'Power Good' signal had been sent.
"You did it," Sarah said, raising an eyebrow. "You speak fluent obsolete." But the diagram had a jagged red arrow
Elias smiled, wiping flux off his thumb. He connected the Molex connector to the old hard drive. The drive spun up with a reassuring chatter.
"It’s not about speaking the language, Sarah," Elias said, unplugging the jumper to power down the unit. "It’s about listening to the history. The D220p-01 had a secret, hidden in its pinout. It just needed someone patient enough to find Pinout 2."
He placed the heavy power supply back on the shelf, ready for the data recovery. It wasn't just a brick anymore. It was a key.
Here’s a solid, technical review of the Dell D220P-01 power supply pinout (often searched as “Dell D220p 01 Power Supply Pinout 2” due to its two main connector variants).
This PSU is a proprietary 220W unit found in older Dell OptiPlex desktops (e.g., GX270, GX280, SFF models). A reliable pinout is critical because Dell deviates from the ATX standard.
A: Not recommended. These are not isolated ground designs; connecting them in series is dangerous and likely to cause short circuits.
The Dell D220p 01 power supply may also feature other connectors such as:
Important Note: The pinout provided is for general reference and might not cover every specific detail or variation of the Dell D220p 01 power supply. Always ensure you consult the specific documentation for your model or a trusted source when working with power supplies to avoid any damage or safety risks.
Safety Precaution: Working with power supplies can be dangerous due to the risk of electric shock. Ensure you take necessary precautions such as grounding yourself and ensuring the power supply is not connected to a power source when making any connections.
This content is a general guide and might need adjustments based on the specific requirements or details of the Dell D220p 01 power supply. Always verify information through official documentation or support forums for the most accurate and up-to-date details.
The Dell D220P-01 (DA-2 Series) is a specialized 220W external power supply used primarily for Dell Optiplex Ultra Small Form Factor (USFF) systems. It is popular in the DIY community—especially for eGPU setups—due to its high 12V output (18A) and relatively low cost. Pinout Configuration
The connector is a proprietary 8-pin DIN-style plug. While it is mechanically similar to an 8-pin EPS12V connector, it is not electrically compatible; plugging it directly into a standard motherboard will cause permanent damage. Wire Color Signal / Description 1 Remote + (Signal) 2 +12V Output 3 Ground (-) 4 +12V Output 5 Remote Ground / Signal 6 +12V Output 7 Ground (-) 8 +12V Output / Signal
Note: Some technical guides indicate that Pin 5 is the "Remote" pin and must be shorted to Ground to turn the unit on. Technical Specifications Input: 100–240V AC, 50–60Hz Output: 12V DC at 18A (216W–220W total)
Protection: Includes Over Voltage (OVP), Over Current (OCP), and Short Circuit Protection (SCP). Modification & Usage Tips
Turning it On: To enable the 12V output without a Dell system, you typically need to jumper Pin 5 (Remote) to Ground. Users often report the LED turning from orange (standby) to green (active) once properly shorted.
Wire Identification: If cutting the cable for a custom project, you will typically find three white wires (+12V), three black wires (Ground), a blue wire (Signal), and a red wire.
Compatibility: This unit is the standard replacement for Dell Optiplex models SX280, GX620, 745, 755, and 760.
For detailed wiring diagrams and professional insights, you can review the Dell D220P-01 Power Supply Pinout Guide or general Power Supply Pinouts on Scribd. Community discussions on platforms like Reddit often focus on using this charger with ADT-Link UT3G eGPU setups.
Are you planning to use this for an eGPU setup or a custom 12V project? Dell D220P 01 Power Supply Wiring
Solution: The D220P-01 ignores the main connector’s PS_ON# (Pin 14 is empty). You must use the Green wire on the secondary 6-pin connector.