GE QS24 UR Quick Start Manual page 49

Note
UR SWITCH MODULE – QUICKSTART GUIDE
Select the Configuration > RSTP > RO Mode menu as shown
above.
Click the Edit button to configure RO Mode.
Select the desired ports that are part of the ring, as shown below.
Click OK to exit.
Only 2 ports can be selected to Ring Only Mode.
QUICKSTART GUIDE
QS–45