I just bought a new iMac with Snow Leopard preinstalled. I downloaded the Alltel QuickLink Mobile access manager for the um150 usb broadband wireless device. When I tried to connect, a window came up that asked for the serial number, but it would not accept it. VZ email support told me that they currently have NO usb devices that are compatible with Snow Leopard, but they would have one "in the near future." However, their VZAccess support page lists the um150 as one of 4 supported usb devices, with an update to VZAccess. Since my device is an Alltel um150, my guess is that it is not compatible with VZAccess. Does anyone know of a work-around that will make my device work with Verizon? Thanks!