text: **Serial-attached SCSI ports**
  Two 12 Gbps serial-attached SCSI (SAS) ports are side by side on the canister with indicator 
  LEDs below them. They are numbered 1 on the left and 2 on the right. Each port is 
  associated with one green and one amber LED indicating its status of the operation, as listed 
  in Table 13-3. 
  
  Table 13-3 SAS LED statuses 
  
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              [html]<thead><tr><td>LED</td><td>Meaning</td></tr></thead><tbody><tr><td>Green</td><td>Link is connected and up.</td></tr><tr><td>Orange</td><td>Fault on the SAS link ( disconnected, wrong speed, errors ).</td></tr></tbody>
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  **Node canister status LEDs**
  There are three LEDs in a row in the upper middle position of the canister that indicates the 
  status and the functionality of the node (see Table 13-4). 