I-O DATA USB-RSAQ2 [USB to Serial Conversion Adapter] The items in the images are all that is included. I do not have an environment to verify its operation, so its functionality is unconfirmed. Therefore, it is treated as junk. Please understand that this is junk, and no returns or refunds are accepted. From the manufacturer's website: "The USB-RSAQ2 is a USB to RS-232C conversion adapter that allows you to connect RS-232C devices via USB. You can use it with modems and terminal adapters, which are typical RS-232C devices, as well as digital cameras and PDAs. It supports DTE speeds up to 230.4kbps, maximizing the performance of terminal adapters. Also, since it can connect RS-232C devices to USB, you can enjoy the benefits of USB, such as Plug & Play support, low resource consumption, and relaxed connection limits, making RS-232C devices easier to handle. It supports both Windows and Macintosh, allowing you to use RS-232C devices with iMacs, iBooks, Power Macintosh G3s, Power Mac G4s, and PowerBook G3s that do not have RS-232C ports."