Introduction
This manual provides comprehensive instructions for the assembly, operation, maintenance, and troubleshooting of your MOUNTUP Electric Height Adjustable Standing Desk (Model UP512-B3). Please read this manual thoroughly before assembly and use to ensure safe and efficient operation. Keep this manual for future reference.
Important Safety Information
Do not exceed the weight limit of 176 pounds. Ensure the desk is fully assembled and stable before use. Keep the desk away from the edge of the floor to prevent tipping.
- Always ensure the desk is on a level surface.
- Keep children and pets away from the desk during operation.
- Do not place hands or other objects near moving parts.
- Disconnect power before cleaning or maintenance.
- Only use the desk for its intended purpose.
Package Contents
Before beginning assembly, verify that all components listed below are present and undamaged. If any parts are missing or damaged, please contact MOUNTUP customer support.

Figure 1: Standing Desk Part List. This image displays all the individual components included in the package, laid out on a mat, ready for assembly. It shows the two-piece desktop, the metal frame components, the motor, the control panel, and various hardware such as screws and tools.
Components List:
- Desktop (2 sections)
- Desk Legs (2)
- Crossbar/Frame components
- Electric Motor
- Control Panel with LED Display
- Headphone Hook
- Keyboard Tray
- Power Adapter and Cable
- Assembly Hardware (screws, bolts, tools)
- Non-slip foot pads
- Optional Lockable Casters
- Cable Management Grommets (2)
Setup and Assembly
The MOUNTUP Electric Height Adjustable Standing Desk is designed for quick and easy assembly, typically within 30 minutes. Follow these steps carefully:
- Unpack and Identify Parts: Lay out all components on a clean, flat surface, referring to the "Package Contents" section and Figure 1 to identify each part.
- Assemble Desktop: The desktop comes in two sections. Align and secure these sections using the provided screws and accessories. Ensure the seam is tight and flush.
- Attach Legs to Desktop: Securely attach the desk legs to the underside of the assembled desktop using the designated mounting points and hardware.
- Install Crossbar and Motor: Connect the crossbar between the two legs. Install the electric motor and connect it to the leg mechanisms as per the detailed diagrams in the included installation guide.
- Mount Control Panel: Attach the control panel to the underside of the desktop in an easily accessible location. Connect its cable to the motor/power unit.
- Install Accessories:
- Headphone Hooks: Attach the two headphone hooks to the side of the desk frame.
- Cable Management: Utilize the two cable management grommets on the desktop to route and organize your wires, keeping the workspace tidy.
- Choose Base Option: Decide between the non-slip foot pads for stationary use or the lockable casters for easy mobility. Attach your preferred option to the bottom of the desk legs.

Figure 2: Base Options. This image illustrates the choice between non-slip foot pads for stability and lockable casters for mobility, allowing users to customize their desk setup.
- Connect Power: Plug the power adapter into the desk's control unit and then into a standard electrical outlet.

Figure 3: Assembled Desk. This image shows the MOUNTUP Electric Height Adjustable Standing Desk fully assembled and set up in a workspace, demonstrating its spacious desktop and integrated features.
Operating Instructions
Your MOUNTUP standing desk features an intelligent control panel for easy height adjustment and memory functions.

Figure 4: Programmable Control Panel. This image provides a detailed view of the desk's control panel, highlighting the LED display for current height, memory preset buttons, and up/down adjustment controls.
Control Panel Functions:
- LED Display: Shows the current height of the desk in inches.
- Up/Down Arrows (∧/∨): Press and hold to continuously adjust the desk height. Release to stop at your desired position. The desk can be adjusted from 28.7 inches to 46.5 inches.

Figure 5: Height Adjustment Range. This image visually demonstrates the desk's adjustable height range, from its lowest point suitable for sitting to its highest point for standing, accommodating various user preferences.
- Memory Presets (1, 2, 3, 4):
- Setting a Preset: Adjust the desk to your desired height. Press the "M" button (or similar memory set button, if present, otherwise assume direct press of 1-4 after setting height) followed by the desired number button (1, 2, 3, or 4). The display may flash to confirm the setting.
- Recalling a Preset: Simply press the corresponding number button (1, 2, 3, or 4) to automatically move the desk to the saved height.
The durable quiet motor ensures smooth and reliable height adjustments, tested for over 20,000 cycles with a full load capacity of 176 lbs.

Figure 6: Durable Lifting Capacity. This image highlights the desk's robust construction and motor, capable of lifting up to 176 pounds and tested for over 20,000 lifting cycles, ensuring long-term reliability.
Maintenance
Regular maintenance will ensure the longevity and optimal performance of your MOUNTUP standing desk.
- Cleaning: Wipe the desktop and frame with a soft, damp cloth. Avoid abrasive cleaners or harsh chemicals that could damage the finish.
- Cable Management: Periodically check and organize cables to prevent tangling or damage, especially during height adjustments.
- Fastener Check: Every few months, inspect all screws and bolts to ensure they are tight. Retighten if necessary.
- Motor Care: The motor is designed for durability. Avoid overloading the desk beyond its 176 lbs capacity.
Troubleshooting
If you encounter issues with your MOUNTUP Electric Height Adjustable Standing Desk, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Desk does not move or respond to controls. | No power, loose connection, motor error. |
|
| Desk moves erratically or stops during adjustment. | Overload, obstruction, sensor issue, motor calibration. |
|
| Desk makes unusual noises during operation. | Loose components, motor issue. |
|
If the problem persists after attempting these solutions, please contact MOUNTUP customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Model Number | UP512-B3 |
| Product Dimensions (D x W x H) | 24"D x 55"W x 46.5"H |
| Height Adjustment Range | 28.7" to 46.5" |
| Maximum Weight Capacity | 176 Pounds (80 kg) |
| Desktop Material | Engineered Wood (Rustic Brown finish) |
| Frame Material | Metal (Powder Coated finish) |
| Item Weight | 20.4 Kilograms (approx. 45 lbs) |
| Motor Durability | Tested for over 20,000 cycles |
| Special Features | Memory Controller, Headphone Hook, Keyboard Tray, Optional Casters, Cable Management Grommets |
| Assembly Required | Yes (Tools included) |
Warranty and Support
Your MOUNTUP Electric Height Adjustable Standing Desk comes with a Limited Warranty. Please refer to the warranty card included with your product for specific terms and conditions.
For technical support, missing parts, or warranty claims, please contact MOUNTUP customer service through the following channels:
- Online Support: Visit the official MOUNTUP website (link not provided in input, so generic advice).
- Email Support: Refer to your product packaging or included documentation for contact email.
- Protection Plans: Extended protection plans are available for purchase separately, offering additional coverage beyond the standard warranty. These plans typically cover 2-year or 3-year periods.
When contacting support, please have your product model number (UP512-B3) and purchase information readily available.





