Does h5400 series support SDIO?
Yes, the h5400 series is SDIO ready. Use of SDIO (Secured Digital Input / Output) will require installation of driver software for the h5400 series and SDIO cards. HP is supporting SDIO Now! as a standard way to ensure SDIO cards will work across Pocket PC devices. Once SDIO Now! drivers are available for SDIO cards we will work with the SDIO card manufactures to ensure compatibility and make the necessary H3900 software upgrades available. See the iPAQ Pocket PC website for latest list of tested SD cards.