Humminbird AS-CR Advanced Accessory USB MMC Card Reader
This Compaq brand card reader plugs into a USB port on a computer and allows your computer to read SD and MMC cards. This will allow you to update the software on your unit by using "My Humminbird" at the following link: (click here). This accessory also includes a 16MB MMC card. This product works with Humminbird 900, 700 and Matrix Series products.
