Dell MT Desktop Power Supply Replacement Guide – 290W L290EM-01 for OptiPlex, Precision, PowerEdge
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Product link: https://nadalan-power.com/products/dell-power-supply-l290em-01
Is Your Dell MT Desktop Having Power Issues? Here‘s Your 290W Replacement Guide
If you own a Dell OptiPlex MT (Mini Tower), Precision workstation, or PowerEdge server and are experiencing power failures, random shutdowns, or simply need a spare power supply, you’ve come to the right place.
Dell uses specific power supply designs for their MT (Mini Tower) desktops and workstations. Finding the correct replacement can be challenging because these units have specific power ratings and connector types.
This guide will help you quickly identify if the 290W L290EM-01 Power Supply is the right match for your Dell computer.
Quick Compatibility Check
This 290W power supply is specifically designed for the following Dell models:
Dell OptiPlex MT Series (Mini Tower):
| Series | Compatible Models |
| OptiPlex 3000 Series | 3020 MT |
| OptiPlex 7000 Series | 7020 MT, 8020 MT |
| OptiPlex 9000 Series | 9020 MT |
Dell Precision Workstation Series:
| Series | Compatible Models |
| Precision 3000 Series | T1700, T20, T3620 |
| Precision Workstation | XE2 |
Dell PowerEdge Server Series:
| Series | Compatible Models |
| PowerEdge T Series | T130 |
| Other | 3670 |
⚠️ Important: This power supply is compatible with MT (Mini Tower) desktops and workstations. Please verify your original power supply‘s form factor before ordering.
Compatible Power Supply Models
This power supply replaces the following Dell power supply models:
| Model Number | Compatible? |
| L290EM-00 | ✅ Yes |
| L290EM-01 | ✅ Yes (main model) |
| AC290AM-00 | ✅ Yes |
| H290AM-00 | ✅ Yes |
| HU290EM-00 | ✅ Yes |
| D290EM-00 | ✅ Yes |
| L290AM-00 | ✅ Yes |
Compatible Part Numbers:
| Part Number | Compatible? |
| 776VT | ✅ Yes |
| RVTHD | ✅ Yes |
| XFXKX | ✅ Yes |
| KPRG9 | ✅ Yes |
| N0KPM | ✅ Yes |
| 4FGD7 | ✅ Yes |
| HYV3H | ✅ Yes |
💡 Tip: Simply remove your old power supply and check the sticker on top. If you see any of the model numbers or part numbers listed above, this replacement will work perfectly.
Key Specifications at a Glance
| Specification | Detail |
| Power Output | 290W |
| Model Numbers | L290EM-01 (and 6+ compatible models) |
| Input Voltage | 100-240V ~ |
| Form Factor | Dell MT (Mini Tower) / Workstation |
This 290W output provides reliable power for Dell‘s MT desktops, Precision workstations, and entry-level PowerEdge servers.
Connector Configuration – The Most Important Check
| Interface Type | Connector | Quantity |
| Motherboard Main Power | 8-pin | 1 |
| CPU Power | 4-pin | 1 |
✅ Note: This power supply uses an 8-pin motherboard connector – please verify your motherboard matches this configuration.
Physical Size – Measure Before You Order
Even if the model number matches, it‘s always a good idea to check the size.
| Dimension | Measurement |
| Length | Standard MT size |
| Width | Standard MT size |
| Height | Standard MT size |
This specific size is designed to fit perfectly inside Dell MT (Mini Tower) chassis.
Why Choose This 290W Replacement Power Supply?
| Feature | Benefit |
| Dell MT Specific | Designed for OptiPlex 3020/7020/8020/9020 MT, Precision, PowerEdge |
| Direct Replacement | No adapter or modification needed – works right out of the box |
| Universal Input | 100-240V – works worldwide (plug adapter may be needed) |
| Wide Compatibility | Replaces 7+ different Dell model numbers |
| 8-pin Motherboard | Matches Dell MT motherboard specification |
| 1-Year Warranty | Protected by Nadalan‘s 1-year return/exchange policy |
| Fast Global Shipping | Air freight to most countries in approximately 10 days |
Compatibility Note:
This power supply is compatible with:
- Dell OptiPlex 3020 MT, 7020 MT, 8020 MT, 9020 MT
- Dell Precision T1700, T20, T3620, XE2
- Dell PowerEdge T130, 3670
Installation Tips
- Power down and unplug your Dell desktop completely.
- Open the case – Dell MT cases typically have thumbscrews on the back.
- Disconnect cables from the old power supply – note the 8-pin motherboard and 4-pin CPU connectors.
- Take a photo of the connector layout before disconnecting.
- Remove the old PSU – usually held by 3-4 screws on the back of the case.
- Install the new PSU – secure with screws, then reconnect all cables following your photo.
- Test before closing – power on to ensure the system boots properly.
Frequently Asked Questions
Q1: What Dell models is this 290W power supply compatible with?
OptiPlex MT: 3020, 7020, 8020, 9020 MT
Precision: T1700, T20, T3620, XE2
PowerEdge: T130, 3670
Q2: What are the compatible power supply model numbers?
L290EM-00, L290EM-01, AC290AM-00, H290AM-00, HU290EM-00, D290EM-00, L290AM-00.
Q3: What are the compatible part numbers?
776VT, RVTHD, XFXKX, KPRG9, N0KPM, 4FGD7, HYV3H.
Q4: What connectors does this power supply have?
1x 8-pin motherboard interface and 1x 4-pin CPU interface.
Q5: Will this work with Dell OptiPlex 9020 MT?
Yes – OptiPlex 9020 MT is specifically listed as compatible.
Q6: Will this work with Dell Precision T1700?
Yes – Precision T1700 is listed as compatible.
Q7: Will this work with Dell PowerEdge T130?
Yes – PowerEdge T130 is listed as compatible.
Q8: Will this work with Dell OptiPlex SFF (Small Form Factor) models?
No. This is designed for MT (Mini Tower) desktops, not SFF models.
Q9: Is this a genuine Dell power supply?
This is a high-quality compatible replacement that meets or exceeds OEM specifications.
Q10: What is the warranty period?
Nadalan offers a 1-year warranty on this power supply.
Q11: How long does shipping take?
Approximately 10 days by air freight. Tax and duty included for most countries.
Q12: Do you offer wholesale pricing?
Yes. Nadalan welcomes bulk orders and corporate partnerships. Contact us to discuss custom negotiations and volume pricing.
Still Not Sure? Contact Us
If you‘ve checked the model numbers but still aren’t 100% sure about compatibility, don‘t guess. Send us a photo of your original power supply’s label, and we will confirm compatibility for you.
Contact Nadalan:
- Email: gc_ds@sina.com
- Phone / WhatsApp: +0086 18062682902
Order today and get your Dell OptiPlex MT, Precision, or PowerEdge desktop back up and running with reliable power!