164 Push the clip down gently to secure it, ensuring the fasteningpieces snap into the slots on the unit.To fit another unit:1 Rest the second unit on top of the clip and align it with the frontof the unit below.2 Press down gently on the unit to secure it onto the clip, ensuringthe fastening pieces fit into the slots on the unit below, asshown in Figure 5 (picture 2).Figure 5 Stacking Your Units TogetherTo remove the clip:1 Remove the top unit together with the clip. If you hook a fingeraround one of the the fastening pieces and then pull it gentlyfrom out of the slot, the clip should come away with the upperunit attached to it.2 Push the clip in the center, so it bends towards the base of theunit, and then separate once the clip is loose.Before you Install your RouterBefore you can configure the Router you need to know the IPinformation allocation method used by your ISP. There are fourdifferent ways that ISPs allocate IP information, as describedbelow:Dynamic IP Address (DSL or Cable)Dynamic IP addressing (or DHCP) automatically assigns the RouterIP information. This method is popular with Cable providers. Thismethod is also used if your modem has a built in DHCP server.PPPoE (DSL only)If the installation instructions that accompany your modem askyou to install a PPPoE client on your PC then select this option.Note that when you install the Router, you will not need to usethe PPPoE software on your PC. To configure the Router you willneed to know the following: Username, Password, and ServiceName (if required by your ISP).Static IP Address (DSL or Cable)The ISP provides the IP addressing information for you to entermanually. To configure the Router you will need to know thefollowing: IP Address, Subnet Mask, ISP Gateway Address, andDNS address(es).PPTP (DSL or Cable)PPTP is used by some providers, mostly in Europe. If theinstallation instructions that accompany your modem ask you tosetup a dialup connection using a PPTP VPN tunnel then select1FasteningPiece2FasteningPiecedua08609-5aaa01.book Page 16 Thursday, September 11, 2003 12:15 PM