FH216

Installation

Page 2-10

Setting Up Forced Speed for the MDI-II Ports

Auto-sensing is the default mode. If the devices connected to the hub using the

MDI-II ports do not support Auto-sensing or if for other reasons you wish to

force the speed, set the DIP switches to one of the positions shown in Figure 2-

15. Note that forced speed can only be applied to the MDI-II ports. The DIP

switches will force either or both of the MDI-II ports into one of three modes:

❑ Auto-sensing — set the Port 1 switches and/or Port 2 switches to the

down position

❑ 100M — set the Port switches 1 and/or Port 2 switches to the up

position

❑ 10M — set Port 1 switch 1 up, 2 down; and/or Port 2 switch 3 up, 4

down

▲ Important! After changing the DIP switch settings, the

AC power to the unit must be cycled.

▲ Important! Ports 1 and 8 are individually shared with the

MDI-II ports. Therefore, when an MDI-II port is in use, its

nearest port (1 or 8) will be disabled.

Figure 2-15 MDI-II DIP Switch Settings

Connecting Ethernet and Fast Ethernet Hubs

If your transmission speed is 10Mbps, connect 10Mbps devices using UTP

Category 3 cables. This enables sending/receiving to other 10Mbps devices.

The FH216 and FH216B include a Fast Ethernet MII connector on the rear

panel. You can connect a Fast Ethernet MII transceiver to this port. It is ﬁxed at

100Mbps and half-duplex.

1 2 3 4

Port 1 Port 8

MDI-II Switch

Port 1 Port 8

sensing

100M

10M

Auto-

1 2

3 4