I am having problems getting my MBP to recognize my sprint mobile broadband card. I use a Compass 597 that plugs into my USB port. Every time I turn on my computer and click on the Sprint icon to launch the modem it fails to recognize that my device is connected. I have to switch usb ports several times ad restart my computer several times before the computer finally recognizes the device. This is really annoying to have to jump through all these hoops. Has anyone had similar problems. Would upgrading to a better card solve my problems.