Had a closer look at mine, seems it ramps up to medium fan speed around 30 degrees. Using my phone meter suggests it is about ~50dB within 3" of the intake. 2 feet away this falls to ~35dB.
Here is the environment output for my unit.
From the images I have found online, it looks like the fan is just a normal 60x12.5mm 4 pin PWM part
Current config for mine:
Here is the environment output for my unit.
Code:
SYSTEM POWER SUPPLY STATUS
==========================
Power Supply Type: AC
External Power Supply POE -48V Voltage Status: Not Present
SYSTEM FAN STATUS
=================
Fan 1 OK, fan level 2, Medium speed setting, 4064 RPM, 47% PWM
SYSTEM TEMPERATURE STATUS
=========================
Intake Right temperature: 28 Celsius, Normal
Intake User temperature: 32 Celsius, Normal
Exhaust Fan temperature: 36 Celsius, Normal
Intake Right(Bezel) temperature: 31 Celsius, Normal
REAL TIME CLOCK BATTERY STATUS
==============================
Battery OK (checked at power up)
SYSTEM ALARMS SETTINGS
======================
System fan failure results in warning
Intake Right Over Temperature Alarm = 42C
Intake User Over Temperature Alarm = 42C
Exhaust Fan Over Temperature Alarm = 75C
Intake Right(Bezel) Over Temperature Alarm = 42C
SYSTEM VOLTAGES
===============
12V voltage = 12.228 V, Normal
5V voltage = 5.125 V, Normal
3.3V voltage = 3.318 V, Normal
2.5V voltage = 2.480 V, Normal
1.8V voltage = 1.808 V, Normal
1.2V voltage = 1.199 V, Normal
CPU/ASIC voltage = 1.023 V, Normal
SYSTEM POWER
===============
Motherboard Components Power consumption = 21.9 W
Total System Power consumption is: 21.9 W
Environmental information last updated 00:00:01 ago
ENVIRONMENTAL STRESS EVENTS
===========================
Critical Temperature: Maxium = 0
Total Duration = 0
Exceed Fan Tray Removal Time: Maximum Time= 0
Total Time = 0
Total MCU access error count: 0
From the images I have found online, it looks like the fan is just a normal 60x12.5mm 4 pin PWM part
Current config for mine:
Code:
version 15.2
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Cisco-1921
!
boot-start-marker
warm-reboot
boot-end-marker
!
!
enable secret *****
enable password *******
!
no aaa new-model
!
ip cef
!
!
!
ip dhcp excluded-address 192.168.0.1
ip dhcp excluded-address 192.168.0.50 192.168.0.51
!
ip dhcp pool main_dhcp_pool
network 192.168.0.0 255.255.255.0
default-router 192.168.0.1
dns-server ****
lease 0 2
!
ip dhcp pool Kei-PC
host 192.168.0.2 255.255.255.0
client-identifier ***
client-name Kei-PC
!
ip dhcp pool Humax
host 192.168.0.4 255.255.255.0
client-identifier ***
client-name Humax
!
ip dhcp pool Kei-NAS
host 192.168.0.3 255.255.255.0
hardware-address ***
client-name Kei-NAS
!
ip dhcp pool Server
host 192.168.0.100 255.255.255.0
hardware-address ***
!
ip dhcp pool Marantz
host 192.168.0.5 255.255.255.0
client-identifier ***
!
!
!
ip name-server 8.8.8.8
ip name-server 194.72.0.114
no ipv6 cef
multilink bundle-name authenticated
!
!
!
license udi pid CISCO1921/K9 sn ********
!
!
archive
path ftp:/********@192.168.0.3/Cisco-1921
write-memory
time-period 10080
!
!
!
!
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
no ip address
ip tcp adjust-mss 1452
duplex auto
speed auto
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface GigabitEthernet0/1
ip address 192.168.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1452
duplex auto
speed auto
no mop enabled
!
interface Dialer1
ip address negotiated
ip access-group 101 in
no ip unreachables
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
ppp chap hostname [email protected]
ppp chap password 7 1415060303092F23312A1337361115190205545856571A0D0C15
ppp pap sent-username [email protected] password ********
!
ip forward-protocol nd
!
ip http server
no ip http secure-server
!
ip nat inside source list 1 interface Dialer1 overload
ip nat inside source static udp 192.168.0.3 9987 interface Dialer1 9987
ip nat inside source static tcp 192.168.0.3 30033 interface Dialer1 30033
ip nat inside source static tcp 192.168.0.3 10011 interface Dialer1 10011
ip nat inside source static tcp 192.168.0.2 2564 interface Dialer1 2564
ip nat inside source static tcp 192.168.0.2 2565 interface Dialer1 2565
ip nat inside source static udp 192.168.0.2 2564 interface Dialer1 2564
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 192.168.0.0 255.255.255.0 GigabitEthernet0/1
!
logging history errors
access-list 1 remark INTERNET-ACCESS
access-list 1 permit 192.168.0.0 0.0.0.255
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
password *******
login
transport input all
!
scheduler allocate 20000 1000
!
end
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