Why does my Mac (OS 8.6) ask for a driver for my JetFlashA, although the manual says I do not need a driver?
For a single-card device or Pen Drive, no driver is needed. However, both types of devices need USB support for 1.3.x or above. If using Mac OS 8.6, you can check the level of USB support by selecting USB Support in Extensions in the System Folder and Get Info (in the File menu). Please see http://developer.apple.com/hardware/usb/versionusb.htmf or more info.