Cabletron Systems MICROMMAC- User Manual

Page of 105
INSTALLATION
3-7
Figure 3-7.  The Ring Speed Switch
3.7  SETTING THE NVRAM SWITCH
Figure 3-8 shows the location of the NVRAM Reset Switch. It can be 
reached by a inserting a small screwdriver through the side vent. NVRAM 
(Non-Volatile Random Access Memory) stores user-entered parameters 
such as IP address and device name. 
Figure 3-8.  NVRAM Reset Switch Location
To restore MicroMMAC-T parameters to the factory defaults:
1. With power-ON, toggle the NVRAM switch from one position to the 
other.
Ring Speed LED Indicator
On = 16 Mbps
Off = 4 Mbps
TOKEN RING HUB 
WITH
 LANVIEW®
 SUPPORTING 100 OHM STP CABLE
 MicroMMAC-24T
4 Mb
16 Mb
SPEED
4 Mb
16 Mb
SPEED
NVRAM
RESET SWITCH
IN HERE
TOKEN RING HUB 
WITH
 LANVIEW®
 
SUPPOR
TING 100 OHM STP
 CABLE
 MicroMMAC-24T