7
The speed switch is marked
100 M
(for 100-Mbps Fast Ethernet) at one end
and
10
(for 10-Mbps Ethernet) at the other. To prevent accidental changing of
the setting, the switch tab protrudes only slightly. A groove in the tab lets you set
the switch with a fingernail or pencil tip.
Slide the tab toward the front of the hub for 100-Mbps operation and toward the
back for 10-Mbps operation. The setting can be adjusted at any time, whether the
hub is on or off.
The air inlets on the right side and the fan outlet on the left side allow the
cooling fan to maintain airflow in the hub.
Important:
Never block the air inlets or the fan outlet. Cooling is
extremely important for the hub.
Back Panel
On the back of the hub, starting at the end closest to the fan, are the hub's DC
power jack and five RJ-45 jacks labeled
1
,
2
,
3
,
4
, and
Uplink
.
The DC power jack is marked with the voltage, amperage, and polarity required
by the hub (9V DC, 1A, inside positive, outside negative). This jack takes a
barrel connector such as that on the supplied AC adapter. Use only this adapter
or an equivalent adapter obtained from your computer equipment dealer.
You can connect the hub to DC power at any time. The Collision indicator and
the indicator for the currently selected speed will light up. After a few seconds
the Collision indicator will go out and the hub will be ready.
Summary of Contents for DFE-904
Page 6: ......
