About the Meade USB to RS-232 (Serial) Adapter... The Meade USB to RS-232 (Serial) Adapter is a USB to RS-232 Serial Adapter which permits connection of any Meade telescope''s RS-232 serial interface to a PC or laptops available USB Port. This allows you to use the Meade #505 Cable Connector Kit with Software or #506 Cable Connector Kit with Software to connect your telescope to the PC. A driver for the Meade USB to RS-232 (Serial) Adapter is included on a CD, which effectively creates a virtual serial port within the PC. The USB adapter and software are compatible with Windows 98, ME, 2000 and XP. For Windows 32-bit operating systems. USB support for Windows 7 - 64 bit systems is available with use of a 64-bit driver available from Meade.com. Meade USB to RS-232 (Serial) Adapter Features... USB to RS-232 Serial Adapter Permits connection of any Meade telescope''s RS-232 serial interface to a PC or laptops available USB Port Allows you to use the Meade #505 Cable Connector Kit with Software or #506 Cable Connector Kit with Software to connect your telescope to the PC A driver is included on a CD, which effectively creates a virtual serial port within the PC The USB adapter and software are compatible with Windows 98, ME, 2000 and XP Meade USB to RS-232 (Serial) Adapter Specifications... Equipment Type: Adapter Cable Compatible Operating Systems: Windows 98, ME, 2000 and XP Requirements: Windows 32-bit operating systems Meade Product Number: 07507