HP 7400C HP Scanjet 7400C Series Scanner Windows - (English) Setup and Support - Page 10
Checking connections, Checking the USB connection - scanjet usb
UPC - 725184356292
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10 Installing and troubleshooting Checking connections The scanner can be connected to the computer using a USB or a SCSI connection. When you run the scanning installation program, the program checks to see if the computer supports USB. If supported, USB is recommended because its installation is simpler. If the installation program displays a message saying it cannot find USB but you think you have it, see "Checking the USB connection" below. If you are having trouble with SCSI, see "Checking the SCSI connection" on page 11. Checking the USB connection This scanner can be connected to the computer using USB if these requirements can be met: q The computer has a USB connector on the back (see below). q The computer is running Microsoft Windows 98, 2000, or Me. q In the computer BIOS, USB is enabled. In some older computers, it is disabled. See the documentation that came with the computer. If you change the BIOS, restart the computer and reinstall the software. If the system still does not detect USB, use the SCSI connection. See "Checking the SCSI connection" on page 11. Note: A USB connection is not supported in Windows 95 and Windows NT 4.0. You must have a SCSI connection to use the HP ScanJet with these operating systems. USB port on the scanner USB port on the computer