NEC Express5800/B120e-h User Manual page 80

Chapter 2 Preparations
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Important To connect a peripheral or interface cable provided by a vendor other than
NEC (or third party) to the CPU blade, make sure that the device is available for
the CPU blade. Some third party devices are not available for the CPU blade.
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The serial port connector cannot be directly connected with the leased line.
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Do not connect/disconnect the SUV cable or add/remove the USB device until
the operating system starts running.
To connect/disconnect the SUV cable or add/remove the USB device after OS
startup, follow restrictions of operating system.
If the device having serial interface is connected, first power off the CPU blade
and destination device, and remove the power cord from the destination device
before connecting/disconnecting SUV cable or serial cable. Failure to follow it
may cause the devices to be defected due to the potential difference between
them.
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The USB device may not work correctly in USB 2.0 High Speed mode
depending on type of USB device or cable length. In such a case, use a shorter
cable, or use a USB hub that supports USB2.0 High Speed mode.
Express5800/B120e-h User's Guide
2. Installation and Connection