Handspring, Inc. announced the availability of a software upgrade for the Treo 90 handheld organizer that provides compatibility with Secure Digital Input/Output (SD I/O) expansion cards. SD I/O is a standard that enables the addition of new functionality such as Bluetooth, 802.11, GPS, presentation display, or digital imaging to a host device like the Treo 90. There are currently two expansion cards that can take advantage of Treo 90’s SD I/O capabilities. One is MARGI System’s Presenter-to-Go, which connects the Treo 90 directly to digital LCD projectors or other VGA devices to show business presentations stored on Treo in full color. This solution includes software that allows for slide presentation from any printable Windows application including PowerPoint, Word and HTML. The other expansion card currently available is the Palm Bluetooth Card. This card lets people wirelessly link a Treo 90 to any other Bluetooth-enabled device within a 30-foot radius. For example, a customer could use the Treo 90 with a Bluetooth-enabled mobile phone to access the Internet, email, and messages wirelessly.