@monstro900
I had never tried it … until now 
Yes it works !
I have attached a 1TB WD Elements USB HDD
Pressed the “Viera Tools” Button on the Panasonic Remote then selected “Media Server”
The “WDTVLiveHub” appeared on the TV under “Media Servers” select “Videos” “By Folders”
And i can see and play content from both the Internal and External Drives.
3 Things to Note:
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Yes, the Panasonic support wireless (10BASE-T / 100BASE-TX)
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If you have DVD ISO’s … forget it (Not Supported … well, not even recognized) * SEE CODECS
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Plugging the WD ELEMENTS HDD directly in the TV’s USB works fine as well
(My Panasonic has 3 USB’s but only 1 of them works with HDD’s … the other 2 are for Flashdrives,Dongles,Charging 3D Glasses etc.)
Your TV Specs (Mines 99% indentical apart from some 3D codec support)
• Video Codecs : MPEG1 • MPEG2 • MPEG4 • DivX® • WMV9 • H.264 (MPEG4 AVC) • Motion JPEG (MJPEG)
• Formats : MPEG2-PS • MPEG2-TS • AVI • DivX® Plus HD • MKV • MP4 • ASF • MTS (AVCHD) • MOV • VOB
• Audio Codecs : MP3 • WMA • AAC • LPCM • ADPCM • AC3 (Dolby Digital) • Dolby Digital Plus • HE-AAC • DTS Core
