1-10
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-02
Chapter 1 Overview of the Routers
Chassis Views
Figure 1-11
Back Panel Slots and Connectors for Cisco 3925 and 3945 (SPE 100 and SPE 150)
1
EHWIC slots
1
0, 1, 2 and 3 (0, Far right)
1.
Double-wide EHWICs can fit into slot 0 and 1, and into slot 2 and 3. EHWIC slots support HWIC, VIC, and WIC.
2
USB serial console port
3
AUX port
4
RJ-45 serial console port
5
SFP1 and SFP2 (2, Top)
6
10/100/1000 Ethernet ports GE 0/1 and GE 0/2
(GE 0/2,Top)
7
10/100/1000 Ethernet port GE0/0
8
USB0 and USB1 (1, Top)
9
Ground
10
Cisco 3945 Service module slots
2
, 1 (Lower right), 2
(Lower left), 3 (Top right), and 4 (Top left)
Cisco 3925 Service module slots
3
, 1 (Lower left)
4
, 2 (Top
left)
2.
Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules. See
Table 1-5
for more router slot and module configurations.
3.
Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules. Double wide service modules install in the top slots. See
Table 1-5
for more router slot and module configurations.
4.
One single-wide in slot 1 (lower left). Lower right panel cannot be removed. See
Table 1-5
for more router slot and module configurations.
11
CompactFlash
5
0 and 1 (0, Far right)
5.
Only Advanced Capability CompactFlash (CF) purchased from Cisco operates in Cisco 2900 series and Cisco 3900 series ISRs. Legacy CF can impact
and severely degrade performance in these routers. See the
“Memory” section on page 1-22
. When legacy CF is inserted, the following error message
appears:
WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and
severely degrade performance of the system. Please use supported compact flash cards only.
2
1
4
3
ISM
EN
EN
SFP
S
E
N
S
L
S
L
USB
1
0
CONSOLE
AUX
GE 0/1
GE 0/2
G
E
0
/
0
SFP
S
E
N
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
C3900-SPE100/K9
PVDM3
PVDM2
PVDM1
PVDM0
250917
3
5
2
6
9
1
11
11
7
4
8
10
10
EHWIC 3
EHWIC 2
EHWIC 1
EHWIC 0
CF1
CF0
3945/3925
SM SLOTS
SPE