These products are guaranteed to work with your HP Photosmart A637 printer.
HP Photosmart A637 is a compact inkjet printer. The main features of this printer are 3.5 inch touch and preview screen, red eye reduction, borderless printing, memory card slot and a PictBridge port for direct printing from the camera. This inkjet printer uses HP thermal inkjet technology for high quality printouts. The print speed is 3.7 pages per minute of 4x6 inch colour draft. The maximum resolution for monochrome is up to 1200 x 1200 dpi and for colour it is up to 4800 x 1200 dpi.