HPNA (Home Phone Network Adapter) 

HPNA networking allows you to connect computers all over your house to your 
home network using your home's existing telephone wiring. If you are using 
Ethernet or Wireless, you do NOT need HPNA as it is slower with smaller 
throughput than Ethernet.  

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Although increased speed of an Ethernet network is not necessary for operating
your AudioTron (except in the case of WAV file playback), it does improve file
transfer speed between PCs in your network. If you don't mind wiring your home
with CAT-5 cable, you can enjoy the benefits of faster data transfer offered
by Ethernet networking. 

If you cannot wire your home with CAT-5 cables, HPNA 2.0 provides an easy way
to set up an adequate network that is compatible with AT. The only drawback 
over an Ethernet network is HPNA's inability to handle WAV file playback on 
the AT. Playback of MP3 and Windows Media (WMA) compressed formats will not 
be restricted.

Setting up either type of network will require a Network Interface Card (NIC),
which is available from several manufacturers as cards that install inside
your PC, or external network adapters that connect to a USB (Universal Serial
Bus) port.

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