Last updated: Jun 5, 2026, 9:07 AM
How to fix connection issues on a Toast card reader.
Troubleshoot a Toast card reader that won't connect—including the "Searching for BBPOS Chipper 2x" or "Searching for BBPOS MSR" message—so you can take payments again.
Applies to: Toast POS, Toast Flex terminal, Toast Tap, magnetic stripe reader (MSR) | Permissions needed: Access to the Toast POS app on the affected device
What you'll accomplish: Restore the connection between your terminal and your card reader so it can process payments, or confirm that the reader needs to be replaced.
| Symptom | Most Common Cause | Quick Fix |
| "Searching for BBPOS Chipper 2x" or "Searching for BBPOS MSR" appears and cards won't process | The terminal has lost the USB connection to the card reader | Reseat the reader's USB cable, then restart the terminal. If the message stays, move the reader to a different USB port. |
| Tap-to-pay stops working (the blue light turns off) when a swipe reader is also connected | A known issue affects some swipe readers in a dual-reader setup | Use the Toast Tap® by itself and unplug the swipe reader. |
| The card reader drops offline during service and you have to unplug it or restart to take payments | An intermittent USB connection | Reseat the cable, restart the terminal, then run the Card Reader Test app. |
| The Card Reader Test shows FAIL_TO_START_USB in bootloader mode, or "try again" followed by "fail" | The reader hardware has failed | Contact Toast Customer Care for a replacement. In the meantime, use your Toast Tap®. |
This message means your terminal is trying to reach your card reader but can't detect it right now. "Searching for BBPOS Chipper 2x" refers to your Toast Tap® reader, and "Searching for BBPOS MSR" refers to your magnetic stripe (swipe) reader. In most cases the USB connection has dropped.
To restore the connection:
If the message remains, reset the USB detection on the terminal using the following steps:
After the terminal restarts, test the card reader functionality with a real credit card payment.
Expected outcome: The "Searching for BBPOS" message clears and your reader processes a payment.
If the issue persists, contact Toast Customer Care to arrange next steps
There is a known issue that affects tap-to-pay when a Toast Tap® is used in a dual-reader setup with a magnetic stripe (swipe) reader (guest pay, and employee pay). You may notice that your Toast Tap® stops working and its blue light turns off when the swipe reader is also connected for employee payments. This happens with some swipe readers, and the team is working on a solution.
For now, using the Toast Tap® by itself resolves the problem. Unplug the swipe reader and confirm the Toast Tap's blue light returns.
Expected outcome: The Toast Tap's blue light comes back on and tap-to-pay works again.
If your reader still won't connect, use the Card Reader Test app to check whether the reader itself has failed.
If you see the error FAIL_TO_START_USB in bootloader mode—or the test shows "try again" and then "fail"—the reader hardware needs to be replaced. You can unplug the faulty reader and have it replaced, or purchase a new one, depending on warranty start date. If you are using a dual card reader, the functioning card reader can be used solo while the replacement card reader is on its way
Note: A message that reads "Unable to communicate with reader" points to the same connection problem. Work through the steps above before assuming the reader has failed.
If the Card Reader Test confirms a hardware failure, or the reader still won't connect after every step above, Toast Customer Care can provide additional troubleshooting (if applicable), and help arrange a replacement. Have this information ready so the conversation moves quickly:
Contact Toast Customer Care to arrange next steps.
"Searching for BBPOS Chipper 2x" means your terminal is trying to connect to your Toast Tap® card reader but can't detect it right now. It is usually a dropped USB connection rather than a broken reader. Reseat the reader's USB cable, restart the terminal, and try a different USB port, then run a test payment.
Also asked as:
A card reader that keeps going offline during service—forcing you to unplug it or restart the terminal to take payments—usually has an intermittent USB connection. Reseat the reader's USB cable, restart the terminal, and run the Card Reader Test app to confirm the reader is healthy. If the test fails, contact Toast Customer Care about a replacement.
Also asked as:
Yes, you can use your Toast Tap® by itself while you wait for a replacement swipe reader. Unplug the faulty swipe reader and reconnect your Toast Tap, and it should keep processing payments until the replacement arrives.
Also asked as: