What’s the difference between a class A and a Class B terminal credit card terminal? Manufacturer and payment processor support. Most importantly, if something goes wrong, acquirers will not provide any troubleshooting assistance.

Class A terminals are fully updated, and receive Class A support from the manufacturer and merchant services provider, including troubleshooting and technical support.

Class B, or any Non-Class A terminals, are terminals no longer in production and do not have manufacturer support, or acquirers are not providing assistance if there’s a problem. Replacement parts and inventory may be difficult to find.