3Com 3C16753 - OfficeConnect Dual Speed Hub 8, Руководство пользователя

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3Com recommends that the cable (B) between the Fast
Ethernet hubs is no longer than 5m (16.4ft). This allows the
maximum hub-to-workstation cable length (A or C) of 100m
(328ft).
Figure 3 Configuration Rules and Example of a Fast Ethernet
(100Mbps) Network
Ethernet (10Mbps) Configuration Rules
You can connect a maximum of four Ethernet (10Mbps)
hubs in series between workstations, or between a
workstation and a non-repeater piece of equipment (such as
a switch). Each cable must not exceed 100m (328ft). An
example is shown in Figure 4.
Figure 4 Example of an Ethernet (10Mbps) Network