12XHub for Notebooks User’s GuideMaximizing XHub PerformanceFor your XHub for Notebooks to operate at optimum speed, itmust be connected to a USB 2.0 port, and USB 2.0 driver softwarewith hub support must be installed on your computer.Note: Macintosh users—There are currently no USB 2.0 driversfor the Macintosh OS, and USB 2.0 PCI cards will not work onMacintosh systems. Your XHub for Notebooks will operate atUSB 1.1 speeds.If your computer does not have a built-in USB 2.0 port, werecommend connecting the XHub for Notebooks to an AdaptecUSB 2.0 card for the highest-quality USB 2.0 connection. (Forinformation on USB 2.0 adapters, go to the Adaptec website atwww.adaptec.com.)USB 2.0 drivers with hub support can be found on the XHub forNotebooks CD included in your kit. See Installing Drivers on page 5for more information.Technical SpecificationsNote: The XHub for Notebooks can operate without a poweradapter if it is connected to a bus-powered USB device, such asa mouse, keyboard, or zip drive. However, if the total powerconsumption of the USB devices connected to the XHubexceeds 490 mA, a power adapter must be used. Use AdaptecUSBControl to determine the power consumption of yourdevices. Refer to USBControl online help for more information.USB Compliant Version USB 2.0, USB Hi-Speed CertifiedNumber of USB Ports 4Operating Temperature 0 °C – 40 °CPower Source Self-poweredPower Adapter Input AC 100 V – 240 V, 50 Hz/60 HzPower Adapter Output DC 5 V/2.6 A