USB Charging Cradle. Synchronize and recharge your Handspring Treo communicator or organizer with any USB-enabled computer. Places Treo communicator or organizer at a comfortable reading angle. Provides convenient desktop access and display. Get a second cradle for your home or office computer. Includes AC power adapter (110-240v). Requirements: Windows 98 or higher or any Macintosh with a built in USB port.