1. Introduction
This manual provides essential information for setting up, operating, maintaining, and troubleshooting your Dell Precision 3551 Mobile Workstation. This device is a powerful mobile workstation designed for demanding tasks, featuring a 10th Gen Intel Core i7-10850H processor, 32GB DDR4 RAM, a 512GB Solid-State Drive (SSD), and NVIDIA Quadro P620 discrete graphics. It comes pre-installed with Windows 11 Pro.
2. Product Overview
The Dell Precision 3551 is a 15.6-inch mobile workstation built for performance and portability. It features a Full HD WVA (Wide Viewing Angle) 1920x1080 non-touch display, a backlit keyboard with a numeric keypad, and comprehensive connectivity options.

Figure 2.1: Dell Precision 3551 Mobile Workstation.
Key Features:
- 10th Gen Intel Core i7-10850H Processor (6 cores, 2.7 GHz up to 5.1 GHz)
- 32GB DDR4 2933 MHz SDRAM
- 512GB Solid-State Drive (SSD)
- 15.6-inch Full HD WVA 1920x1080 Non-Touch Display
- NVIDIA Quadro P620 Discrete Graphics with 4GB GDDR5
- Backlit Keyboard with Numeric Keypad
- Wi-Fi 802.11ax Wireless with Bluetooth 5.1
- Gigabit Ethernet Port
- Two USB 3.2 Gen 1 (Type-A) ports
- Fingerprint reader
- One HDMI 2.0 port
- One USB 3.2 Gen 1 (Type-A) port with PowerShare
3. Setup
Follow these steps to set up your Dell Precision 3551 Mobile Workstation for the first time.
3.1 Unpacking and Initial Inspection
- Carefully remove the laptop and all accessories from the packaging.
- Inspect the laptop for any visible damage. If damage is found, contact your vendor immediately.
- Ensure all components are present: Dell Precision 3551 laptop, power adapter, and any included documentation.
3.2 Connecting to Power
- Connect the power adapter to the power connector on the laptop.
- Plug the power cable into a wall outlet.
- Allow the battery to charge for at least 30 minutes before initial use, or until the battery indicator shows a sufficient charge.

Figure 3.1: Side view of the Dell Precision 3551 with labeled ports.
3.3 Initial Boot and Windows Setup
- Open the laptop lid and press the power button, typically located on the top-right of the keyboard deck.
- Follow the on-screen instructions to complete the Windows 11 Pro setup. This includes selecting your region, language, connecting to a Wi-Fi network, and creating a user account.
- Once Windows is set up, ensure all critical updates are installed for optimal performance and security.
3.4 Connecting Peripherals
Your workstation offers various ports for connecting external devices:
- USB 3.2 Gen 1 (Type-A) Ports: Connect USB devices such as external hard drives, keyboards, or mice. One port supports PowerShare for charging devices even when the laptop is off.
- HDMI 2.0 Port: Connect to an external display or projector.
- Gigabit Ethernet Port: Connect to a wired network for stable internet access.
- SD Card Reader: Insert SD cards for data transfer.
- Headset Jack: Connect headphones or a headset.
4. Operating Your Workstation
This section covers the basic operation of your Dell Precision 3551.
4.1 Power On/Off and Sleep
- Power On: Press the power button.
- Shut Down: Click the Windows Start button, then Power > Shut down.
- Sleep: Close the lid or click the Windows Start button, then Power > Sleep.
4.2 Using the Keyboard and Touchpad

Figure 4.1: Keyboard and Touchpad Layout.
- Keyboard: The full-size backlit keyboard includes a numeric keypad for efficient data entry. Use the Fn key combinations for special functions (e.g., adjusting brightness, volume).
- Touchpad: The precision touchpad supports multi-touch gestures for navigation. Refer to Windows settings for customizing touchpad gestures.
- Fingerprint Reader: The integrated fingerprint reader allows for secure and quick login via Windows Hello. Set it up in Windows Settings > Accounts > Sign-in options.
4.3 Display and Graphics
The 15.6-inch Full HD (1920x1080) WVA display provides clear visuals. The NVIDIA Quadro P620 graphics card is optimized for professional applications, ensuring smooth performance for design, engineering, and content creation tasks.
4.4 Network and Wireless Connectivity
- Wi-Fi: Connect to wireless networks using the integrated Wi-Fi 802.11ax (Wi-Fi 6) for high-speed internet access.
- Bluetooth: Pair Bluetooth 5.1 compatible devices such as headphones, mice, or external speakers.
- Ethernet: Use the Gigabit Ethernet port for a stable and fast wired network connection.
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your workstation.
5.1 Cleaning Your Workstation
- Screen: Use a soft, lint-free cloth lightly dampened with water or a screen-cleaning solution. Avoid harsh chemicals.
- Keyboard and Chassis: Use a soft cloth to wipe surfaces. For dust, use compressed air.
- Ports: Keep ports free of dust and debris to ensure proper connections.
5.2 Software Updates
Regularly update your Windows 11 Pro operating system and drivers to ensure security, stability, and performance. Access Windows Update via Settings > Windows Update.
5.3 Battery Care
To maximize battery life, avoid extreme temperatures and fully discharging the battery frequently. For prolonged storage, charge the battery to about 50% and store the laptop in a cool, dry place.
6. Troubleshooting
This section provides solutions to common issues you might encounter.
6.1 Power Issues
- Laptop does not turn on: Ensure the power adapter is securely connected to both the laptop and a working power outlet. Check if the power adapter's indicator light is on.
- Battery not charging: Verify the power adapter connection. Try a different outlet. If the issue persists, the battery or adapter may require service.
6.2 Display Issues
- No display on screen: Connect an external monitor to the HDMI port to check if the issue is with the laptop's internal display. Ensure the display brightness is not set to minimum.
- Flickering or distorted display: Update your graphics drivers. If using an external monitor, check the cable connection.
6.3 Connectivity Issues
- No Wi-Fi connection: Ensure Wi-Fi is enabled in Windows settings. Restart your router and the laptop.
- Bluetooth device not pairing: Ensure the Bluetooth device is in pairing mode and within range. Check Bluetooth settings on your laptop.
6.4 System Performance
- Slow performance: Close unnecessary applications. Check Task Manager for processes consuming high CPU or RAM. Ensure sufficient free space on the SSD.
- Overheating: Ensure the laptop's vents are not blocked. Use the laptop on a hard, flat surface. Excessive fan noise can indicate high workload or dust accumulation.
7. Specifications
Detailed technical specifications for the Dell Precision 3551 Mobile Workstation.
| Feature | Specification |
|---|---|
| Processor | 10th Gen Intel Core i7-10850H (6 cores, 2.7 GHz up to 5.1 GHz) |
| RAM | 32GB DDR4 2933 MHz SDRAM |
| Storage | 512GB SSD |
| Display | 15.6-inch Full HD WVA (1920x1080) Non-Touch |
| Graphics | NVIDIA Quadro P620 with 4GB GDDR5 |
| Operating System | Windows 11 Pro |
| Wireless Connectivity | Wi-Fi 802.11ax, Bluetooth 5.1 |
| Ports | 2x USB 3.2 Gen 1 (Type-A), 1x USB 3.2 Gen 1 (Type-A) with PowerShare, 1x HDMI 2.0, 1x Gigabit Ethernet, SD Card Reader, Headset Jack |
| Special Features | Backlit Keyboard, Numeric Keypad, Fingerprint Reader, Webcam |
| Dimensions (LxWxH) | 9.3 x 14.14 x 1.1 inches |
| Weight | 3.88 pounds |
8. Warranty and Support
This Dell Precision 3551 is a renewed product. Warranty and support terms for renewed products may differ from new products.
8.1 Return Policy
The product is typically covered by a 90-day return policy. Please refer to the specific terms provided by the seller at the time of purchase for detailed return and refund information.
8.2 Protection Plans
Optional protection plans may be available for purchase to extend coverage beyond the standard return policy. Review the details of any purchased protection plan for its specific terms and conditions.
8.3 Technical Support
For technical assistance, driver downloads, or further support, please visit the official Dell support website or contact the seller from whom the renewed product was purchased.





