Cautions About Interference; Cautions About Security - Epson UB-E04 Reference Manual

• To prevent the Wireless LAN unit from being removed accidentally by some external force, be sure to
attach the connector cover to TM printers where a connector cover can be installed.
• Wireless LAN connections using the Wireless LAN unit have not been confirmed to operate with all
wireless LAN devices, and operation with all wireless LAN devices cannot be guaranteed. Thoroughly
research the specifications of the wireless LAN device you want to connect before using it.
• Wireless LAN operations may not be able to connect properly depending on the radio waves of the
surroundings. In particular, wireless LAN operations in ad hoc mode may not connect properly
depending on the combination of the device to be connected. Therefore, be sure to thoroughly check
and evaluate the device before using it.
• The UB-E04 cannot use wired LAN and wireless LAN at the same time. If using the wireless LAN, do so
without connecting a LAN cable.

Cautions about Interference

• Use the included USB extension cable to connect the UB-E04 and the Wireless LAN unit. If you insert the
Wireless LAN unit directly into the UB-E04, it will cause interference with other cables and negatively
affect transmissions.
• Perform adjustments so that the unit does not use the same channel as other wireless LAN devices
nearby.
• Keep the following points in mind when using the Wireless LAN unit in an environment with devices that
generate radio interference, such as a kitchen microwave.
Install the printer as far away from devices that generate radio interference as possible.
Use the USB extension cable included with the Wireless LAN unit, and install the Wireless LAN unit as
far away from devices that generate radio interference as possible.
Install a shielding plate between the printer and a device that generates radio interference.
When setting the auto-channel of the access point, be sure to set it so it does not generate radio
interference.
• If the Wireless LAN unit generates interference for other devices, such as your TV or radio, use the
following methods to remove the interference.
Install the product away from the TV or radio.
Connect this product to an outlet different from the outlet the TV or radio is connected to.

Cautions about Security

Important Cautions about Your Privacy Protection
A wireless LAN uses radio waves instead of a LAN cable to transmit information between the computer and
the wireless access point. Therefore, LAN connections can easily be made within the radio waves' range.
However, radio waves easily go beyond obstacles such as walls and can create security problems such as
the following.
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