GarrettCom Magnum ST80 Manual De Usuario

Stackable Personal Hubs 

 Installation and User Guide   (04/01)

 
 

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When stacking, switch the 

Stack Enable switch of the bottom 

ST80 to the “OFF” position (left).  All 

other units should be switched to the 

“ON” position (right).  Using the IRB 

ribbon cable, connect one end to     

 

Two stacked ST80s - 16 RJ-45 ports 

either Inter-Repeater-Bus connector 

(IRB1 or IRB2)  of the bottom ST80.  

Connect the other end of the cable to 

the corresponding IRB connector of 

the top ST80 (i.e., the IRB cable is 

connected from IRB1 to IRB1, or from 

IRB2 to IRB2).  If additional ST80 

              Three stacked ST80s - 24 RJ-45 ports 

 Personal Hubs are to be added, 

connect another IRB cable from the 

unused IRB connector of the existing 

stack’s top unit to the corresponding 

IRB connector of the ST80 Personal 

Hub to be added.  Be sure that the 

Stack Enable Switch of the added unit 

is set to the “ON” position.  Up to five   

Four stacked ST80s - 32 RJ-45 ports 

Stackable Personal Hubs may be 

connected in this fashion.   

 

Each unit of the stack must be 

powered by its own external power 

supply unit.  “Power on” is verified by 

observing that the PWR LED of each 

unit is illuminated.  Should one unit of 

the stack be powered down, the 

remainder of the stack will still function  

Five stacked ST80s - 40 RJ-45 ports 

properly.   

 

 

 

Increased port capacity via stacking