MB411SPO-B
MB491SKL-B
MB991SK-B
MB991IK-B
MB492SKL-B
MB992SK-B
MB992SKR-B
MB994IPO-3SB
MB994SP-4SB-1
MB994SP-4S
MB994SK-1B
MB996SP-6SB
MB998SP-B
ToughArmor
ToughArmor EX
ToughArmor
ToughArmor
ToughArmor EX
ToughArmor
ToughArmor
ToughArmor
ToughArmor
ToughArmor
ToughArmor
ToughArmor
ToughArmor
MB491SKL-B
MB491SKL-B
MB991SK-B
MB991IK-B
EX MB492SKL-B
MB992SK-B
MB992SKR-B
Number of 2.5" HDD/SSD Supported
1
1
1
1
2
2
2
2
4
4
4
6
8
Supports 2.5" SATA HDD/SSD
Supports 2.5" SAS HDD/SSD
 
 
Supports SATA 6Gbps
Supports SAS single channel
 
 
   
Supports SAS dual channel    
     
Supports 1x slim ODD drive    
     
7mm height drive only                        
7 - 9.5mm height drive
 
12.5 - 15mm height drive  
 
 
Fits in 3.5" floppy bay  
 
Fits in 5.25" device bay    
     
Fits in Slim ODD or slim FDD bay
                       
Key Lock on Housing    
 
           
Key Lock on Drive Tray  
   
         
   
Thumb Lock Design  
   
           
 
UL Listed              
Dual cooling fans                
 
Fan On/Off switch              
       
Fan Speed Control                      
 
Built-in RAID Chipset            
           
Hot swappable
Active Power Technology (APT)