ThinkCentre M90t Gen 3 - Desktop computer LENOVO - Free user manual and instructions
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| Product Type | Desktop Computer |
| Brand | Lenovo |
| Model | ThinkCentre M90t Gen 3 |
| Processor | 12th Gen Intel Core i5/i7/i9 (up to 13th Gen) |
| Memory | Up to 128 GB DDR4 or DDR5 (4 slots) |
| Storage | Up to 2 TB M.2 NVMe SSD + 2 TB SATA HDD |
| Graphics | Integrated Intel UHD or optional discrete GPU |
| Dimensions (W x D x H) | 7.48 x 13.78 x 15.35 inches (190 x 350 x 390 mm) |
| Weight | Approximately 18.7 lbs (8.5 kg) |
| Power Supply | 500W 80+ Platinum |
| Operating System | Windows 11 Pro (pre-installed) |
| Front Ports | 2x USB 3.2, 2x USB-C, 1x headphone/mic combo |
| Rear Ports | 4x USB 3.2, 2x USB 2.0, HDMI, DisplayPort, VGA, Ethernet, audio jacks |
| Expansion Slots | 1x PCIe x16, 1x PCIe x4, 2x M.2, 2x SATA |
| Cooling System | Intelligent fan with dust filter |
| Security Features | Trusted Platform Module (TPM) 2.0, Kensington lock slot, chassis intrusion switch |
| Maintenance | Easy-access chassis, tool-less drive bays, removable dust filters |
| Included Accessories | Power cable, USB keyboard, USB mouse (may vary by region) |
| Warranty | 3-year limited warranty |
Frequently Asked Questions - ThinkCentre M90t Gen 3 LENOVO
How do I set up my ThinkCentre M90t Gen 3 for the first time?
Connect the power cable, monitor, keyboard, and mouse. Press the power button and follow the on-screen instructions to complete Windows 11 setup. Ensure you have an internet connection for updates.
Can I upgrade the RAM or storage?
Yes, the M90t Gen 3 has 4 DIMM slots supporting up to 128 GB DDR4/DDR5, and multiple storage bays including M.2 and SATA. Refer to the hardware maintenance manual for detailed instructions.
How do I enter the BIOS/UEFI?
Restart your computer and press F1 (or F2 on some models) repeatedly during boot until the BIOS screen appears.
What should I do if the computer doesn't turn on?
Check the power cable connection, ensure the power supply switch is on, and try a different outlet. If the issue persists, reset the CMOS by removing the motherboard battery for 30 seconds.
How can I clean the dust filters?
The front and bottom dust filters are removable. Gently pull them out and clean with compressed air or mild soap and water. Ensure they are completely dry before reinstalling.
Does this model support discrete graphics?
Yes, the M90t Gen 3 has a PCIe x16 slot for adding a dedicated GPU. Ensure your power supply can handle the additional load (up to 75W from the slot, or use a GPU with its own power connector).
How do I reset the computer to factory settings?
Go to Settings > Update & Security > Recovery > Reset this PC. Choose 'Remove everything' and follow the prompts. Back up your data first.
Where can I find the product serial number?
The serial number is printed on a sticker on the top cover or side panel. You can also find it in BIOS or by running 'wmic bios get serialnumber' in Command Prompt.
Is Wi-Fi built-in?
Yes, the ThinkCentre M90t Gen 3 comes with integrated Wi-Fi 6 (802.11ax) and Bluetooth 5.2.
What are the power supply specifications?
The standard power supply is 500W 80+ Platinum, with options for 750W. Always use a compatible PSU when upgrading.
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USER MANUAL ThinkCentre M90t Gen 3 LENOVO
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Product information
Brand : LENOVO
Model : ThinkCentre M90t Gen 3
Category : Desktop computer