There are 3 payment applications available on a Verifone T650p - Connect Express (usually for a standalone terminal), Till Terminal Connect and mx51. To understand which terminal your payment application was installed, check out the below steps.
Payment application icons:
Till Terminal Connect
Swipe up on your terminal screen.
Locate the icons below to determine which payment application your terminal has been installed with.
Please note that only one terminal payment application will be installed on each terminal. Check out the section here to find corresponding troubleshooting articles.