Zoom ADSL X4 Model 5551 USB Driver 24.2.1.0 Windows 98/98SE/Me/2000/XP.--Model 5551 - External ADSL Modem/Router/Gateway/Firewall with Ethernet & USB Interfaces.--After extracting this file, open the newly created "Zoom ADSL X4-X5 USB Driver" folder and refer to the ReadMe document for installation instructions. This driver supports Windows 98/98SE/Me/2000/XP. (Note: If you have Zoom ADSL CD with PN: 289-00182, you already have the latest driver version.)--No setup files are required if the modem is connected to your computer via its Ethernet interface.