HP 680n HP Jetdirect Print Servers - Administrator Guide - Page 138
USB Settings, Table 4.10
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USB Settings If the HP Jetdirect print server provides a USB connection to the network device (such as a USB printer), a link to USB configuration parameters will be displayed. See Table 4.10. Table 4.10 USB Settings USB Item USB Speed Desired Communication Mode Status Page Language Description (Read-only parameter, for USB 2.0 print servers only). Specifies the autonegotiated communication speed over the USB connection between the print server and the device. G Full Speed: 12 Mbits/sec as specified in the USB v2.0 specifications, compatible with USB v1.1 specifications. G Hi-Speed: 480 Mbits/sec for USB v2.0 devices only. G Disconnected: The USB port is not connected. Select the highest level of USB communication capabilities when the print server tries to establish a communication level with the printer. If you change the current setting, unplug and then reconnect the USB cable, or power the print server off/on, to activate it. G Automatic (default): The print server will attempt to set the highest level available, starting with IEEE 1284.4. If not successful, subsequent levels are attempted. G IEEE 1284.4: This level is the highest communication level, and allows multiple channels of simultaneous print, scan, and status communication. G MLC: (Multiple Logical Channels) The next level is MLC, an HP-proprietary protocol that allows multiple channels of simultaneous print, scan, and status communication. G Bidirectional: This level provides basic two-way printer communications. Print data is sent to the printing device, and status information is returned from the printing device. G Unidirectional: This is the lowest communication level and provides one-way printer communication from the print server to the printing device. The communication level set by the print server is reported on the Jetdirect configuration page. Select the Page Description Language (PDL) for the Jetdirect configuration page data sent to the printer. Available options include PCL, ASCII, PostScript and HPGL2. ENWW Using the Embedded Web Server 138