Attributes . RS-232 auto-sensing serial interface, DB-9USB V1.1, bi-directional Centronics Parallel Ethernet - 10/100 internal (Subject to the use of all the optional accessories optional) offered in combination with USB and Serial interface (replaces Parallel port)Wireless - 802.11b/g or Bluetooth 2.0 (Subject to the use of all the optional accessories optional) with LCD display offered in combination with USB and Serial interfaces (replaces Parallel port) . Names