text: The Expansion Enclosure is a 2U enclosure that includes the following components: 
  
  (cid:2) A total of 24 2.5-inch drives (HDDs or SSDs). 
  
  (cid:2) Two Storage Bridge Bay (SBB)-compliant enclosure services manager (ESM) canisters. 
  
  (cid:2) Two fan assemblies, which mount between the drive midplane and the Node Canisters. 
  Each fan module is removable when the Node Canister is removed. 
  
  (cid:2) Two Power supplies. 
  
  (cid:2) RS232 port on the back panel (3.5 mm stereo jack), which is used for configuration during 
  manufacturing. 