United States
- Name:
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4X20E50578
- Description:
- ThinkPad 170W AC Adapter (slim tip) - EU1 Countries/Indonesia/Vitenam_x005F_x000D__x005F_x000D_
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Added to cart 36 times recently
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In stock - Ready to Ship
- Brand:
- Lenovo
- Condition:
- GTIN:
- 4059612323430
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3 - List Price:
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3 Year Extended Warranty
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Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
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If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
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Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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4X20E50578 Overview
4X20E50578 is a high-performance ATX power supply delivering 500W, engineered with a semi-modular design and certified with 80 PLUS Gold for superior energy efficiency. It operates on an input voltage range of 100–240V with Active PFC and incorporates multiple protections including OCP, OVP, and SCP, while its 120mm fan with Fluid Dynamic bearing ensures efficient cooling with low noise levels.
Built with robust quality, 4X20E50578 features a comprehensive set of connectors including 1 ATX 24-pin, 1 EPS (CPU) 4+4-pin, 1 PCIe (6+2)-pin, 6 SATA power connectors, and 4 Molex connectors, all paired with sleeved cables for improved durability and management. This power supply is ideally suited for demanding environments such as gaming setups, workstations, and light server applications.
What is the price of 4X20E50578?
Pricing for 4X20E50578 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for 4X20E50578.
Explore more options from Power Supplies or explore other Lenovo products.
4X20E50578 Specifications
| Product Type | Power Supply |
| Wattage | 500W |
| Use Case | Gaming / Workstation |
| Form Factor | ATX |
| Modularity | Semi-Modular |
| 80 PLUS Certification | Gold |
| Rail Configuration | N/A |
| Certifications | 80 PLUS / CE / FCC / UL |
| Remote Monitoring | N/A |
| Input Voltage | 100–240V |
| Hot-Swap Capable | No |
| PFC (Power Factor Correction) | Active PFC |
| Fan Size | 120mm |
| Fan Bearing Type | Fluid Dynamic |
| Zero RPM Mode | No |
| Efficiency Rating | 92% |
| Protections | OCP / OVP / SCP |
| ATX 24-Pin Connectors | 1 |
| EPS (CPU) 4+4 Pin | 1 |
| PCIe (6+2) Connectors | 1 |
| SATA Power Connectors | 6 |
| Molex Connectors | 4 |
| Floppy Connector | No |
| Cable Type | Sleeved |
| RGB Lighting | No |
| MTBF (Mean Time Between Failures) | 120,000 hours |
| Operating Temperature | 40°C |
| Product Name | 4X20E50578 High-Performance ATX Power Supply |
| Height | 3.4 inches |
| Width | 5.9 inches |
| Depth | 5.5 inches |
| Weight | 4.2 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| 80 PLUS Certification | Gold | Gold | Bronze | Gold | Gold |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| Cable Type | Sleeved | Sleeved | Flat | Sleeved | Sleeved |
| Certifications | 80 PLUS / CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL | 80 PLUS/CE/FCC/UL |
| Depth | 5.8 inches | 10.4 inches | 6.3 inches | 5.5 inches | 7 inches |
| Efficiency Rating | 94% | 92% | 87% | 92% | 94% |
| EPS (CPU) 4+4 Pin | 1 | 2 | 1 | 1 | 1 |
| Fan Bearing Type | Ball | Fluid Dynamic | Sleeve | Fluid Dynamic | Dual Ball |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Floppy Connector | No | No | No | No | No |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Height | 5.5 inches | 4.5 inches | 5.5 inches | 3.4 inches | 5 inches |
| Hot-Swap Capable | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 110–240V |
| Modularity | Semi-Modular | Modular | Non-Modular | Semi-Modular | Non-Modular |
| Molex Connectors | 4 | 2 | 2 | 4 | 4 |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 100,000 hours | 120,000 hours | 150,000 hours |
| Operating Temperature | 50°C | 50°C | 40°C | 40°C | 50°C |
| PCIe (6+2) Connectors | 2 | 2 | 1 | 1 | 4 |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Product Name | CAB-AC2UK= High Performance ATX Power Supply | AF486A | 450-AAQB | 4X20E50578 High-Performance ATX Power Supply | CAB-DS-120VAC |
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Protections | OCP / OVP / SCP / OTP | OCP / OVP / UVP / SCP | OCP / OVP / UVP / SCP | OCP / OVP / SCP | OCP / OVP / SCP |
| Rail Configuration | Single Rail | Single Rail | Single Rail | N/A | Single Rail |
| Remote Monitoring | No | No | No | N/A | No |
| RGB Lighting | No | No | No | No | No |
| SATA Power Connectors | 6 | 6 | 4 | 6 | 8 |
| Use Case | Gaming | Gaming / Workstation | Workstation / Gaming / General Use | Gaming / Workstation | Gaming |
| Wattage | 750W | 850W | 450W | 500W | 1200W |
| Weight | 7.5 lbs | 4.2 lbs | 6.4 lbs | 4.2 lbs | 4 lbs |
| Width | 6.3 inches | 5.9 inches | 5.9 inches | 5.9 inches | 6 inches |
| Zero RPM Mode | Yes | Yes | Yes | No | Yes |
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Questions & Answers
Q
What ThinkPad models are compatible with the 4X20E50578 170W AC Adapter (slim tip)?
A
The 4X20E50578 ThinkPad 170W AC Adapter (slim tip) is compatible with ThinkPad P Series (P50, P51, P52), T Series (T470, T480), X1 Carbon Gen5/Gen6, and other Lenovo laptops that require a 170W slim-tip power input.
Q
Can I use the 170W AC Adapter (slim tip) in EU1 countries?
A
Yes. The 4X20E50578 AC Adapter is designed for EU1 region power standards (230V, 50Hz) and includes an EU plug for seamless use across EU1 countries.
Q
Is the 4X20E50578 adapter compatible with Indonesia and Vietnam power outlets?
A
Yes. This adapter supports 100–240V AC input and can be used in Indonesia and Vietnam with the appropriate plug adapter.
Q
What are the input and output specifications of this slim-tip adapter?
A
The adapter accepts 100–240V~50–60Hz input and delivers a DC output of 20V ⎓ 8.5A (170W) through the proprietary 7.9mm×5.5mm slim-tip connector.
Q
Can I charge my ThinkPad faster with the 170W slim-tip adapter?
A
Yes. The 170W slim-tip adapter delivers higher wattage than standard models, enabling faster charging and consistent power delivery under heavy workloads.
Q
How do I verify the authenticity of the Lenovo 4X20E50578 adapter?
A
Check for Lenovo holographic labels, correct Lenovo part numbers (4X20E50578), and safety certifications. Purchase from authorized Lenovo resellers for guaranteed authenticity.
Q
Does the ThinkPad 170W AC Adapter include overvoltage and short-circuit protection?
A
Yes. The adapter features built-in overvoltage, overcurrent, short-circuit, and overheating protection to safeguard your laptop and battery.
Q
What is the cable length of the 4X20E50578 AC adapter?
A
The adapter comes with a 1.2 m power cable and a 1.8 m DC output cable, providing ample length for flexible device placement.
Q
Is this adapter energy-efficient?
A
Yes. It meets ErP Lot 6 and ENERGY STAR® standards, ensuring high efficiency and reduced power consumption in standby and active modes.
Q
Can I use the slim-tip adapter with a ThinkPad docking station?
A
No. The slim-tip adapter is designed for direct laptop charging. For docking station power, use the specially designed Lenovo dock power supply.
Q
What is the warranty period for the Lenovo 170W AC Adapter?
A
The 4X20E50578 AC Adapter comes with a standard one-year limited warranty covering defects in materials and workmanship.
Q
How can I clean or maintain the 170W slim-tip adapter?
A
Unplug the adapter, wipe it with a dry cloth, avoid liquids or abrasive cleaners, and store in a cool, dry place to maintain performance.
Q
Does the adapter support 100–240V worldwide voltage?
A
Yes. The 4X20E50578 adapter auto-ranges from 100V to 240V AC input, making it suitable for global travel with the correct regional plug.
Q
What safety certifications does this Lenovo adapter have?
A
The adapter holds CE, UL, FCC, CCC, and RoHS certifications, ensuring compliance with international safety and environmental standards.
Q
How long will it take to fully charge a ThinkPad with this 170W adapter?
A
Charging time varies by model and battery state. On average, a 0–80% charge completes in under an hour; full charge in approximately 1.5–2 hours.
