1. Introduction
This manual provides essential information for setting up, operating, and maintaining your HP 21.5" FHD All-in-One Desktop Computer. This All-in-One Desktop Computer is equipped with an Intel Celeron processor, generous RAM, and storage, designed for efficient multitasking. It features a 21.5" FHD LED display with an integrated camera and ample ports for various devices. The system runs on Windows 11 Pro, offering enhanced security and responsive performance.

Figure 1: HP 21.5" FHD All-in-One Desktop Computer
2. Package Contents
Verify that all items are present in your product packaging:
- HP 21.5" FHD All-in-One Desktop Computer
- Keyboard
- Mouse
- Docking Station
- Power Adapter
3. Setup
3.1 Initial Setup
- Unpack: Carefully remove all components from the packaging.
- Position: Place the All-in-One computer on a stable, flat surface.
- Connect Power: Plug the power adapter into the computer's power port and then into a wall outlet.
- Connect Keyboard and Mouse: Connect the included keyboard and mouse to the available USB ports.
- Power On: Press the power button, usually located on the side or back of the display.
- Follow On-Screen Instructions: Complete the initial Windows 11 Pro setup, including language, region, network connection, and user account creation.
3.2 Connecting Peripherals
Your HP All-in-One computer offers various ports for connecting external devices:
- USB-C 3.0 (5Gbps signaling rate): For high-speed data transfer and connecting compatible USB-C devices.
- USB-A 2.0: For connecting standard USB devices like printers, external drives, or other peripherals.
- USB-A 3.0 (5Gbps signaling rate): For faster data transfer with compatible USB-A 3.0 devices.
- Ethernet Port (RJ-45): For a wired network connection.
- HDMI Out: To connect an external monitor or display.
- Headphone/Microphone Combo Jack: For connecting headphones or a headset.
- Wi-Fi 6 & Bluetooth: For wireless connectivity to networks and Bluetooth devices.

Figure 2: Rear Ports Overview
4. Operating Instructions
4.1 Powering On/Off
- To Power On: Press the power button.
- To Shut Down: Click the Start button in Windows 11, then select Power > Shut down.
- To Restart: Click the Start button, then select Power > Restart.
- To Sleep: Click the Start button, then select Power > Sleep.
4.2 Using Windows 11 Pro
Your computer comes pre-installed with Windows 11 Pro. Familiarize yourself with the operating system's interface, including the Start menu, taskbar, and settings. Utilize the multi-window features for efficient multitasking.
4.3 Integrated Camera
The HP True Vision HD privacy camera is integrated into the display. It can be used for video calls, online meetings, and other applications requiring a webcam.

Figure 3: Using the Integrated Camera for Video Calls
5. Maintenance
- Cleaning: Use a soft, lint-free cloth to clean the screen and exterior surfaces. Avoid abrasive cleaners or solvents.
- Software Updates: Regularly check for and install Windows updates and driver updates to ensure optimal performance and security.
- Ventilation: Ensure the computer's vents are clear of obstructions to prevent overheating.
- Data Backup: Periodically back up important data to an external drive or cloud storage.
6. Troubleshooting
- No Power: Check all power connections. Ensure the power adapter is securely plugged into both the computer and a working electrical outlet.
- Display Issues: If the screen is blank or flickering, try restarting the computer. Ensure all cables are properly connected.
- Slow Performance: Close unnecessary applications, check for malware, and ensure sufficient free storage space. Consider running system diagnostics.
- Peripheral Not Detected: Ensure the peripheral is correctly connected to the appropriate port. Try connecting it to a different port or restarting the computer.
- Internet Connectivity Issues: Check your Wi-Fi connection or Ethernet cable. Restart your router/modem.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | HP All-In-One |
| Screen Size | 21.5 Inches |
| Screen Resolution | 1920 x 1080 (FHD) |
| Processor | Intel Celeron (up to 2.9 GHz, 2 cores, 2 threads) |
| RAM | 16 GB DDR4 (expandable up to 64GB) |
| Memory Speed | 3200 GHz |
| Storage | 1 TB SSD (expandable up to 2.5TB) |
| Graphics Coprocessor | Integrated Graphics (Intel UHD Graphics 600) |
| Operating System | Windows 11 Pro |
| Wireless Type | Wi-Fi 6, Bluetooth |
| Ports | 1x USB-C 3.0, 2x USB-A 2.0, 2x USB-A 3.0, 1x Ethernet (RJ-45), 1x HDMI, 1x Headphone/Microphone Combo Jack |
| Camera | HP True Vision HD privacy camera |
| Item Weight | 15 pounds |
| Color | Snow White |
8. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official HP support website. Keep your purchase receipt and product serial number handy for any support inquiries.