3-COM Etherlink Plus Interface  (260-5502)    Install   Faxback Doc. # 5466

INSTALLING THE BOARD

The board slides into an expansion slot inside the main system unit of a
personal computer.  The following procedure provides instructions for
installing a board inside an IBM personal computer.  For other types of
personal computers, refer to the computer's operation manual for instruc-
tions on installing expansion boards.

The connector attached to the short edge of the board fits into a cot-out
in the rear panel of the main system unit.  The network cable T connector
plugs into the BNC connector and connects the computer with other computers
on the network.

STEP 1:  DISCONNECT CABLES FROM THE COMPUTER

1.  Turn off the computer, the monitor, and the printer, if one is con-
    nected.

2.  Unplug the computer power first from the wall and then from the main
    system unit.

3.  Disconnect the monitor cables from the main system unit and put the
    monitor aside.

4.  Disconnect the keyboard from the main system unit and put the keyboard
    aside.

5.  Disconnect any other cables from the rear or side panel of the main
    system unit (for example, the printer cable).

    Make sure that all cables are removed from the main system unit and that
    only the EtherLink Plus board and the main system unit are in your work
    space.

6.  Position the main system unit so that you can reach the rear panel and
    have room to work.

STEP 2:  REMOVE THE MAIN SYSTEM UNIT COVER

    Remove the main system unit cover so that you have access to the expan-
    sion slots.  Refer to the personal computer's operation manual if you
    need instructions for removing the cover.

STEP 3:  INSTALL THE ETHERLINK PLUS BOARD GUIDE

    Snap the plastic board guide into the tow holes in the system unit front
    panel.  The plastic leaves of the board guide should point down as shown
    in Figure 2-3.  The end of the board will slide into the groove in the
    guide to hold the board in place.

STEP 4:  REMOVE THE EXPANSION SLOT COVER

    If you are installing an EtherLink Plus board in an IBM AT, the 16-bit 
    slots are recommended because they offer higher performance.  

    A Tandy 3000 with hard disk(s) should be equipped with an EtherLink Plus
    to provide optimum performance as a share server or other network server.
    Also, a Tandy 3000 with EtherLink Plus can be used as a workstation to
    provide a user with the best possible performance for intensive applica-
    tions.

    The EtherLink Plus is not recommended for installation in a Tandy 3000
    HL due to the HL's 8-bit DMA access.

    Remove the cover plate from the expansion slot.  The board has its own
    cover plate, but you should keep the expansion slot cover plate for
    future use.

STEP 5:  INSERT THE BOARD

    CAUTION:  Make sure you have disconnected all power cables before you
    insert the board.

1.  Tilt the board and slip the connector through the rear panel.

2.  Press, but do not force, the board firmly into the slot in the main
    system unit.  Make sure that the edge connector on the bottom of the
    board plugs into the socket on the system board.  If you are installing
    an EtherLink Plus board, make sure that the end of the board fits into
    the board guide.

Installed correctly, the board is flush with any other option boards that
are installed in the personal computer.

3.  Replace the screw you removed from the cover plate to keep the board
    firmly seated in the expansion slot.

STEP 6:  REPLACE THE SYSTEM UNIT COVER

    Replace the system unit cover.  Refer to the personal computer's opera-
    tion manual if you need instructions.

STEP 7:  RECONNECT CABLES AND POWER

1.  Place the monitor back on top of the main system unit and reconnect the
    cables.

2.  Reconnect the keyboard cable and any other devices that were attached to
    the main system unit.

3.  Plug the power cord back into the main system unit and then into the
    wall.

(DKH/jlc-03/28/94)