DS-40 User’s Guide Getting to Know Your Product Button The product has two buttons for scanning operations. Before using these buttons, make sure you have installed your scanning software. a. P Power Button b. ] Start Button You can customize the Start button using Document Capture Pro/Document Capture. & “Document Capture Pro (Windows)/Document Capture (Mac OS X)” on page 30 15 Button Function P Power Button Turns the product on if held down until the Ready light turns on. Turns the product off if held down until the Ready light turns off. ] Start Button Starts scanning.