Netgear GSM7228PS - ProSAFE 28 ports Gigabit Ethernet L2 Managed Stackable Switch with PoE Guía De Administador

If you need to reassign multiple existing stack unit numbers, the configuration could 

become mismatched. To avoid this situation, NETGEAR recommends that you power 
down all switches except the master, and then add them back one at a time using the 
procedure in Section 

314.

Web Interface: Renumber Stack Members

Renumber the stacking member’s ID from 3 to 2.

a. Select System > Management > Basic > Stack Configuration. A screen similar to 

the following displays.

b.  Under Stack Configuration, scroll down and select the Unit ID 3 check box. 

c.  In the Unit ID list, select 2.

d.  Click Apply.

e.  Now the unit ID of the stacking member is 2.