- 39 -■ USB devicesUSB portUSB cableUSB HDD= Note =● It is recommended to connect the device to the TV’s USB port directly.● You cannot use two or more of the same kind of USB devicessimultaneously except USB Flash Memory or USB HDD.● Use USB 3 port for connecting the USB HDD.● Some USB devices or USB HUB may not be used with this TV.● You cannot connect any devices by using USB card reader.● Additional information for the devices may be on the following website.http://panasonic.net/viera/support (English only)■ To listen with speakersDIGITAL AUDIOOptical digital audio cableAmplifier with speaker system● To enjoy multi-channel sound from external equipment (e.g. Dolby Digital5.1ch), connect the equipment to the amplifier. For the connections, readthe manuals of the equipment and amplifier.● To select the sound output to adjust volume, set Speaker Setting.Watching > For best audio > Volume settings