Credit Card Reader Troubleshooting

Use these steps to resolve common issues with your card reader.

💡 Good to Know

• Card readers do NOT work with iPads, Microsoft Surface, or other tablets
• Compatible devices include PC and Mac laptops only

Chromebook Users

If using a Chromebook, you may need to adjust browser permissions.

👉 See: https://support.google.com/chrome/answer/12576972?hl=en

1. Test the Card Reader on Another Device

1. Plug the card reader into a different computer
2. Try swiping a card

• If it works → issue is likely with the original computer
• Contact your IT team for assistance

💡 Good to Know (Mac Users)

• You may be prompted to allow the device
• If missed, go to Privacy & Security → Accessories and allow access

2. Refresh Your Browser

1. Close the current screen
2. Refresh your browser
3. Try swiping again

💡 Good to Know

• Most browsers are supported
• Internet Explorer is not supported

3. Check Card Reader Mode (Keyboard Mode)

The card reader must be set to keyboard mode.

⚠️ Important

• If using a Mac, complete these steps on a PC first

Adjust Card Reader Mode

1. Plug the card reader into your computer

2. Download and open the tool:

• https://maxgiving.sfo3.cdn.digitaloceanspaces.com/MSR_Change_Mode.exe

3. Click the downloaded file to open it

4. Look for the second field in the popup:

• If it shows HID → click Change Mode
• It should change to ???

5. If the popup does not appear:
   • Disable your popup blocker
6. Re-run the tool to confirm:
   • If it shows the updated mode, click OK
7. Close and reopen your browser
8. Return to your event site and test again

Known Non-Compatible Devices

• Chromebook Acer C851-C9CF