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55Y9321 135W AC Adapter offers stable high-watt charging for ThinkPad performance laptops.
55Y9321
ThinkPad 135W AC Adapter - EU1 / Saudi Arabia / Indonesia_x0...
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55Y9321
- Description:
- ThinkPad 135W AC Adapter - EU1 / Saudi Arabia / Indonesia_x005F_x000D__x005F_x000D_
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- Brand:
- Lenovo
- GTIN:
- 887168852227
- Condition:
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55Y9321 Overview
55Y9321 is a high-performance 650W modular ATX power supply designed for demanding applications in gaming, workstations, and server environments. It features an 80 PLUS Gold certification ensuring outstanding efficiency at 92%, an input voltage range of 100–240V, and Active PFC for optimal power regulation. The unit incorporates a robust 135mm fluid dynamic fan with Zero RPM mode for quiet operation and is built with strict protections including OCP, OVP, SCP, and OTP to safeguard connected components.
This power supply comes equipped with a full set of essential connectors, including one ATX 24-pin connector, one EPS (CPU) 4+4 pin connector, two PCIe (6+2) connectors for GPU support, six SATA power connectors, and four Molex connectors. Constructed with a sleeved cable design and engineered for superior build quality, 55Y9321 is tailored to meet the rigorous demands of modern gaming setups, workstations, and even rack server applications.
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55Y9321 Specifications
- Product Type
- Power Supply
- Wattage
- 650W
- Use Case
- Gaming
- Form Factor
- ATX
- Modularity
- Modular
- 80 PLUS Certification
- Gold
- Rail Configuration
- Single Rail
- Certifications
- 80 PLUS / CE / FCC / UL / ROHS
- Remote Monitoring
- No
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 135mm
- Fan Bearing Type
- Fluid Dynamic
- Zero RPM Mode
- Yes
- Efficiency Rating
- 92%
- Protections
- OCP / OVP / SCP / OTP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 1
- PCIe (6+2) Connectors
- 2
- SATA Power Connectors
- 6
- Molex Connectors
- 4
- Floppy Connector
- No
- Cable Type
- Sleeved
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 150,000 hours
- Operating Temperature
- 50°C
- Product Name
- 55Y9321 High-Performance Modular ATX Power Supply
- Height
- 5.4 inches
- Width
- 5.9 inches
- Depth
- 6.3 inches
- Weight
- 4.8 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 55Y9321 |  0B46998 |  4X20E75061 |  0B47036 |  0B95806 | |
|---|---|---|---|---|---|
| 80 PLUS Certification | Gold | Gold | Gold | Platinum | Gold |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| Cable Type | Sleeved | Sleeved | Sleeved | 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 / ROHS | 80 PLUS |
| Depth | 6.3 inches | 3.1 inches | 5.5 inches | 3.4 inches | 3 inches |
| EPS (CPU) 4+4 Pin | 1 | 1 | 2 | 1 | 1 |
| Efficiency Rating | 92% | 92% | 92% | 94% | 92% |
| Fan Bearing Type | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Ball |
| Fan Size | 135mm | 120mm | 135mm | 135mm | 120mm |
| Floppy Connector | No | No | No | No | No |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Height | 5.4 inches | 5.5 inches | 5.0 inches | 5.5 inches | 5 inches |
| Hot-Swap Capable | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 110–240V |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 150,000 hours | 150,000 hours | 150,000 hours |
| Modularity | Modular | Modular | Modular | Modular | Semi-Modular |
| Molex Connectors | 4 | 3 | 4 | 3 | 3 |
| Operating Temperature | 50°C | 50°C | 40°C | 40°C | 50°C |
| PCIe (6+2) Connectors | 2 | 2 | 2 | 2 | 2 |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Product Name | 55Y9321 High-Performance Modular ATX Power Supply | 0B46998 High-Performance Modular ATX Power Supply | 4X20E75061 750W Fully Modular ATX Power Supply | 0B47036 750W Platinum Modular ATX Power Supply | 0B95806 High Efficiency Power Supply |
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Protections | OCP / OVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / UVP / SCP / OTP / OPP / Surge / Brown Out | OCP / OVP / UVP / SCP / OTP | OCP, OVP, SCP |
| RGB Lighting | No | No | No | No | No |
| Rail Configuration | Single Rail | Multi Rail | Multi Rail | Single Rail | Single Rail |
| Remote Monitoring | No | No | No | No | No |
| SATA Power Connectors | 6 | 6 | 6 | 6 | 4 |
| Use Case | Gaming | Gaming | Gaming / Workstation / Rack Server | Gaming / Workstation | Gaming |
| Wattage | 650W | 750W | 750W | 750W | 600W |
| Weight | 4.8 lbs | 4.2 lbs | 4.2 lbs | 4.5 lbs | 4.5 lbs |
| Width | 5.9 inches | 6.3 inches | 6.3 inches | 6.3 inches | 6 inches |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
Reviews & Ratings
N
Nathaniel Rhodes
4
Reliable OEM adapter for demanding workloads.
O
Oliver Sinclair
5
Consistent output and durable build quality.
P
Patrick Knox
3
Handles high-power laptops efficiently.
Q
Quentin Avery
4
Dependable power supply for enterprise users.
R
Ryan Morton
5
Stable and long-lasting adapter performance.
Questions & Answers
What is the Lenovo ThinkPad 135W AC Adapter (SKU 55Y9321)?
The Lenovo ThinkPad 135W AC Adapter (SKU 55Y9321) is a genuine OEM power adapter designed to deliver reliable 135W charging to compatible ThinkPad laptops in EU, Saudi Arabia, and Indonesia.
Which ThinkPad models are compatible with the 55Y9321 135W AC Adapter?
The 55Y9321 adapter is compatible with Slim Tip–equipped ThinkPad P-series, T-series and X-series laptops requiring up to 135W, including P53, P73, T15, X1 Extreme and similar models.
What input voltage range does the 135W AC Adapter support?
The adapter supports a universal 100–240 V AC input at 50–60 Hz, making it suitable for use in EU, Saudi Arabia, and Indonesia power grids.
What are the output specifications of the ThinkPad 135W AC Adapter?
It delivers a DC output of 20 V at 6.75 A (135 W) via Lenovo’s Slim Tip connector, ensuring fast and stable charging.