You just unboxed your HP LaserJet M140w but cannot get it to connect to your MacBook Pro Wi-Fi network. Many users struggle with this specific model because it requires the HP Smart app and does not support WPS PIN methods.
This guide shows you exactly how to setup HP M140w printer units using macOS without technical confusion. You will learn the precise steps for app installation, network pairing, and fixing common connection errors quickly.
Prepare the HP M140w Wireless Setup Mode
Your printer must enter a specific state before your Mac can detect it for configuration. This process puts the device into discovery mode so it can receive new network credentials securely.
Activate the Blinking Wireless Light
- Plug the power cord into the printer and press the Power button.
- Wait approximately 30 seconds for the control panel to stabilize.
- Locate the Wireless button on the front panel featuring a signal icon.
- Press and hold this button for 3 to 5 seconds until the light blinks.
A blinking wireless light indicates the printer is ready to pair with your computer. If the light remains solid or off, restart the printer and wait a full minute before trying again. Keep the device within six feet of your router during this process for the best signal strength.
Install HP Smart App on MacBook Pro
The HP Smart application is mandatory for configuring the M140w on macOS systems. This software handles device discovery and sends your network password directly to the printer securely.
Download and Launch the Application
- Open the Mac App Store from your Dock or Applications folder.
- Type “HP Smart” into the search bar at the top of the window.
- Identify the official app published by HP Inc. to ensure safety.
- Click Get then Install and enter your Apple ID password if prompted.
- Open the application from your Applications folder once installation finishes.
Important: Do not attempt to use browser-based setup or generic drivers. The M140w requires this specific app for initial Wi-Fi configuration on Mac computers.
Connect HP M140w to 2.4 GHz Wi-Fi Network
Your home network likely broadcasts two frequencies, but this printer only works with one. You must select the correct band and enter your password accurately to establish a stable connection.
Add Printer Within HP Smart Interface
- Tap the + (plus) icon located in the top-left corner of the app window.
- Wait 10 to 15 seconds while the software scans for nearby devices.
- Click on HP LaserJet M140w when it appears in the list.
The app may ask you to confirm your location permissions to find the printer effectively. If your device does not appear, ensure the wireless light is still blinking on the printer front panel.
Enter Network Credentials Correctly
- Select your 2.4 GHz Wi-Fi network from the displayed list of available networks.
- Carefully type your Wi-Fi password into the designated text field.
- Use the eye icon to reveal characters and check for capitalization errors.
- Click Connect to send the settings to the printer.
The M140w does not support 5 GHz networks, so ensure you choose the 2.4 GHz option if your router separates them. The connection process typically takes 30 to 60 seconds to complete successfully.
Verify Connection and Print Test Page
Confirmation ensures your printer is fully online and communicating properly with your MacBook Pro. A test page provides physical proof that data is transmitting wirelessly without errors.
Run Diagnostic Print Report
- Navigate to your printer dashboard within the HP Smart application.
- Select Print a Report or Print Test Page from the available options.
- Wait for the printer to warm up and eject the paper.
Success means a page prints with network details and signal strength information. If nothing happens, check the wireless light on the printer to see if it is blinking or solid.
Troubleshoot HP M140w Detection Failures
Connectivity issues often stem from simple configuration errors or temporary glitches in the system. These solutions address the most frequent reasons why a Mac cannot find the printer.
Resolve Printer Not Detected Errors
- Ensure the printer wireless light is blinking before starting the scan.
- Verify your MacBook is connected to the same 2.4 GHz Wi-Fi network.
- Close the HP Smart app completely and reopen it to refresh the scan.
- Restart both your router and printer if the device remains invisible.
Fix Incorrect Wi-Fi Password Issues
The printer will fail silently if you enter the wrong security key. Double-check your password on another device and retype it slowly in the app, paying close attention to case sensitivity. Avoid using guest networks or hotspots as they often block local device communication.
Reset Network Settings on Printer
A network reset clears old data and forces the printer to accept new credentials.
- Ensure the printer is powered on and ready.
- Press and hold the Wireless button for 10 seconds.
- Release the button when the light flashes rapidly to confirm the reset.
You must now repeat the entire setup process from the beginning after a reset. This step is useful if you recently changed your router password or ISP.
Avoid Common HP M140w Setup Mistakes
Specific errors prevent successful installation more often than hardware failures. Knowing what not to do saves significant time and frustration during the configuration process.
- Using WPS PIN: This method is not supported on the M140w model.
- Selecting 5 GHz Wi-Fi: The printer only connects to 2.4 GHz frequencies.
- Skipping HP Smart App: Direct driver installation will not configure Wi-Fi.
- Ignoring Case Sensitivity: Wi-Fi passwords distinguish between upper and lower case letters.
- Poor Router Proximity: Place the printer close to the router during initial setup.
Optimize HP M140w for Daily macOS Use
Final configurations ensure your printing experience remains smooth and efficient over time. These settings make the printer your default choice and enable mobile features.
Set Default Printer in System Settings
- Click the Apple Menu and select System Settings.
- Navigate to Printers & Scanners in the sidebar.
- Select HP LaserJet M140w from your list of devices.
- Choose Default Printer and select your M140w from the dropdown.
Enable AirPrint for Mobile Devices
The M140w supports AirPrint automatically once connected to Wi-Fi. You can print from iPhones, iPads, or Macs without installing additional drivers on those specific devices. Simply open any document, select Print, and choose your HP printer from the list.
Frequently Asked Questions About HP M140w Setup
Does the HP M140w work with 5 GHz Wi-Fi networks?
No, the HP LaserJet M140w only supports 2.4 GHz Wi-Fi networks. You must select the 2.4 GHz band in your router settings or during the app setup process.
Why is my MacBook Pro not finding the HP M140w printer?
Your printer is likely not in setup mode, indicated by a blinking wireless light. Hold the Wireless button for 3 to 5 seconds until the light blinks, then retry the search in the HP Smart app.
Can I setup the HP M140w without the HP Smart app?
No, the HP Smart app is required to configure Wi-Fi settings on the M140w for macOS. Browser-based methods or standard driver installations cannot send network credentials to this model.
How do I reset the Wi-Fi settings on my HP M140w?
Press and hold the Wireless button on the printer for 10 seconds until the light flashes rapidly. This clears all network data and allows you to start the setup process again.
What should I do if the wireless light stays solid orange?
A solid orange light usually means the printer is not connected to a network. Check that you entered the correct Wi-Fi password and that your router is broadcasting a 2.4 GHz signal.
Key Takeaways for Setting Up HP M140w Printer
Successfully learning how to setup HP M140w printer models relies on using the HP Smart app and selecting the correct 2.4 GHz network. Remember that WPS PIN methods do not work, and accurate password entry is critical for connection.
Follow the steps in order: activate blinking mode, install the app, connect to Wi-Fi, and print a test page. Your printer is now ready for reliable wireless printing from your MacBook Pro and other devices.
