Introduction
This manual provides essential information for setting up, operating, maintaining, and troubleshooting your HP EliteDesk 800 G4 Desktop Mini PC. This compact system features an Intel Core i5-8500T processor, 32GB DDR4 RAM, a 1TB NVMe M.2 SSD, and comes pre-installed with Windows 11 Pro. It is designed for efficient performance in various computing environments.
What's in the Box
Upon unpacking, verify that all components are present:
- HP EliteDesk 800 G4 Desktop Mini PC
- Power Adapter
- No Mouse (Sold Separately)
- No Keyboard (Sold Separately)
- No Monitor (Sold Separately)
Note: Peripherals such as a mouse, keyboard, and monitor are not included and must be acquired separately.
Setup
Follow these steps to set up your HP EliteDesk 800 G4 Mini PC:
- Connect the Monitor: Connect your monitor to one of the DisplayPort outputs on the rear of the Mini PC. This system supports dual 4K monitors.
- Connect Peripherals: Connect your keyboard and mouse to the available USB ports. The Mini PC features multiple USB 3.1 ports (Type-A and Type-C) on both the front and rear.
- Connect to Power: Plug the power adapter into the Mini PC's power input and then into a wall outlet.
- Power On: Press the power button located on the front of the Mini PC.
- Initial Windows Setup: Follow the on-screen instructions to complete the Windows 11 Pro setup. This includes setting up your user account and network connection. The system comes with a fresh and activated Windows 11 installation.
- Connect to Network: For internet access, connect an Ethernet cable to the RJ-45 port on the rear, or connect to a wireless network using the integrated Wi-Fi.

Figure 1: Front Panel Connections
This image displays the front panel of the HP EliteDesk 800 G4 Mini PC, highlighting the USB Type-C port, two USB 3.1 Type-A ports, headphone and headset jacks, and the power button. These ports are used for connecting various peripherals and audio devices.

Figure 2: Rear Panel Connections
This image illustrates the rear panel of the HP EliteDesk 800 G4 Mini PC, featuring multiple USB 3.1 Type-A ports, two DisplayPorts for video output, an Ethernet port for wired network connection, and the power input. These connections are crucial for monitor, network, and additional peripheral connectivity.
Operating Instructions
Your HP EliteDesk 800 G4 Mini PC is ready for use after initial setup. Here are some operational guidelines:
- Power On/Off: Press the power button on the front panel to turn the PC on or off. For a controlled shutdown, use the Windows Start menu.
- Display Configuration: Utilize the two DisplayPorts for multi-monitor setups, supporting resolutions up to 4K on each display.
- USB Connectivity: The USB 3.1 ports (both Type-A and Type-C) offer high-speed data transfer for external drives, printers, and other USB devices.
- Audio: Connect headphones or speakers to the front audio jacks.
- Network Access: Connect to the internet via the integrated Wi-Fi or the Ethernet port for a stable wired connection.
- Windows 11 Pro: Explore the features of Windows 11 Pro for enhanced productivity and security.
Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your Mini PC:
- Software Updates: Regularly check for and install Windows updates and driver updates to maintain system stability and security.
- Physical Cleaning: Keep the exterior of the PC clean using a soft, dry cloth. Ensure ventilation grilles are free from dust accumulation to prevent overheating. Use compressed air to gently clear dust from vents if necessary.
- Data Backup: Periodically back up important data to an external drive or cloud storage to prevent data loss.
- System Scans: Run antivirus and anti-malware scans regularly to protect against malicious software.
Troubleshooting
If you encounter issues with your Mini PC, consider the following troubleshooting steps:
- No Power:
- Ensure the power adapter is securely connected to both the PC and a working power outlet.
- Verify the power outlet is functional by plugging in another device.
- No Display:
- Check that the monitor is powered on and the video cable (DisplayPort) is securely connected to both the PC and the monitor.
- Try a different video cable or monitor if available.
- No Internet Connection:
- For wired connections, ensure the Ethernet cable is properly connected and your router/modem is working.
- For Wi-Fi, check that Wi-Fi is enabled in Windows settings and you are connected to the correct network with the correct password.
- Note: Some renewed units may require an external Wi-Fi adapter if the internal one is not functional or missing, despite product descriptions.
- System Slowdown or Noise:
- Close unnecessary applications to free up system resources.
- Ensure ventilation grilles are clear of obstructions. Excessive fan noise can sometimes indicate dust buildup or a failing fan.
- Run a disk check and system diagnostics.
- Peripheral Not Detected:
- Try connecting the peripheral to a different USB port.
- Ensure the peripheral's drivers are installed and up to date.
Specifications
| Feature | Detail |
|---|---|
| Model | HP EliteDesk 800 G4 Tiny |
| Processor | Intel Core i5-8500T (2.1 GHz, up to 3.5 GHz w/Boost, 6 Cores, 9MB Cache) |
| RAM | 32GB DDR4 SDRAM |
| Storage | 1TB NVMe M.2 SSD (PCIE x 2 interface) |
| Operating System | Windows 11 Pro (64-bit) |
| Graphics | Integrated Intel HD Graphics 630 |
| Video Output | 2 x DisplayPort (supports dual 4K monitors) |
| USB Ports | Multiple USB 3.1 Type-A, 1 x USB Type-C |
| Wireless Connectivity | 802.11b/n/ac Wi-Fi |
| Ethernet | Yes (RJ-45) |
| Dimensions (LxWxH) | 7.2 x 7 x 1.4 inches |
| Weight | 3.1 pounds |
| Color | Black |
| Power Source | AC Adapter |
Warranty Information
This HP EliteDesk 800 G4 Desktop Mini PC is a renewed product. It is covered by a 90-day return/replacement policy from the date of purchase. Please retain your proof of purchase for any warranty claims. This policy covers defects in materials and workmanship under normal use.
Note: The warranty period for renewed products may differ from new products. Please refer to your purchase documentation for specific terms and conditions.
Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact the seller or retailer from whom you purchased this renewed product. Provide your product model number (EliteDesk 800 G4 Tiny) and proof of purchase when seeking support.
For general information regarding HP products, you may visit the official HP support website, though specific support for renewed units should first be directed to your seller.