9
4. Stacking Hubs Together
ED-1508S and ED-1508SX provide two stacking ports. Users may connect two hubs
using the supplied stacking cable. Connect one end of the stacking cable to the “IN”
stacking connector of the hub and the other end of the stacking cable to another hub
“OUT” stacking connector. You may stack up to 4 hubs. The hubs cascaded
together through stacking ports are in one collision domain and therefore considered
as one logical hub. Only one ED-1508SX is required to provide internal switching
function to all the ports in the stacked hubs (ED-1516S).
* Caution : When you have two or more ED-1508SX stacked together, only one ED-
1508SX hub’s internal switch is active, the others are inactive. Such
design will eliminate a “Loop” in the network that might cause the whole
network to malfunction.
5. Connecting the power
Connect the power cord to the power
socket on the external switching power
adapter. Connect the DC power jack to
the DC power socket on the rear panel
of the switch. Connect the power cord
to the power outlet. The green Power
LED on the front panel should be lit.
Figure 5-2 Uplink to another hub
Figure 5-4 Connect the AC power adapter
5
4
3
2
1
6
7
8
UPLINK
L
A
N
PR
O F E
S S
I
O
100M
LNK/ACT
P W R
1 0
1
2
3
4
5
7
8
6
100
D I M A X
CO L
8-port
10
/
100
Mbps
ED-1508
Dual Speed Hub
5
4
3
2
1
6
7
8
UPLINK
L
A
N
P R
O F E S S I
O
100M
LNK/ACT
P W R
1 0
1
2
3
4
5
7
8
6
100
D I M A X
CO L
8-port
10
/
100
Mbps
ED-1508
Dual Speed Hub
8
UPLINK
Set DIP switch to
the right hand side
Dual Speed Hub
Set to be Uplink Port
Normal Port
DC
External Power
Adapter
Dual Speed Hub
Figure 5-3 Stack 4 hubs together
5
4
3
2
1
6
7
8
UPLINK
L
A
N
PR
OF E
S S
I O
N
A
L
100M
LNK/ACT
PWR
10
1
2
3
4
5
7
8
6
1 0 0
D I M A X
COL
8-port
10
/
100
Mbps
ED-1508SX
Dual Speed Stackable Hub
Internal Switch
SW
5
4
3
2
1
6
7
8
UPLINK
LA
N
PR
OF E S SI O
N
A
L
100M
LNK/ACT
PWR
10
1
2
3
4
5
7
8
6
1 0 0
D I M A X
COL
8-port
10
/
100
Mbps
ED-1508S
Dual Speed Stackable Hub
5
4
3
2
1
6
7
8
UPLINK
LA
N
PR
OF E S SI O
N A
L
100M
LNK/ACT
PWR
10
1
2
3
4
5
7
8
6
1 0 0
D I M A X
COL
8-port
10
/
100
Mbps
ED-1508S
Dual Speed Stackable Hub
Internal
Switch
ED-1508SX
ED-1508S
ED-1508S
5
4
3
2
1
6
7
8
UPLINK
L A
N
P R
OF
E S
S I
O
N
A
L
100M
LNK/ACT
PWR
10
1
2
3
4
5
7
8
6
1 0 0
D I M A X
COL
8-port
10
/
100
Mbps
ED-1508S
Dual Speed Stackable Hub
10Mbps
100Mbps
ED-1508S
