Connect your digital camera to the HP Photosmart A646 Color Inkjet Printer using the Pictbridge port. This lets you view, edit, personalize and print your photos without using a computer. A built-in keyboard and a 3.45â LCD touch screen with a stylus provide the controls you need to do these functions. A USB port and Bluetooth compatibility give you further choices in connectivity. The input and output trays hold 20 sheets each of several paper sizes, including 4x6-inch and 5x7-inch and photos print out in 28 seconds.