|  |  | ACP-4020MB-00XE | 
        
            | Disk Drive Bay | Slim ODD | 1 | 1 | 
        
            | Drive Bay | 3.5 External Bay | 2 | 2 | 
        
            | 3.5 Internal Bay | - | - | 
        
            | Disk Drive Bay | 2.5" Internal | 1 | 1 | 
        
            | Cooling | System Fan | 2 (9 cm / 53 CFM) | 2 (9 cm / 53 CFM) | 
        
            | Air Filter | Yes | Yes | 
        
            | Front I/O Interface | USB3.0 | 2 | 2 | 
        
            | Miscellaneous | LED Indicators | Power, HDD, temperature, fan, LAN1, and LAN2 | Power, HDD, temperature, fan, LAN1, and LAN2 | 
        
            | Rear Panel | One 9-pin D-Sub opening | Five 9-pin D-Sub & one 68-pin SCSI openings | 
        
            | Intelligent System Module | Remote Monitoring | CPU/System fan speed , CPU/System temperature , motherboard voltage | CPU/System fan speed , CPU/System temperature , motherboard voltage | 
        
            |  | Operational Temperature | 0 ~ 40° C (32 ~ 104° F) | 0 ~ 40° C (32 ~ 104° F) | 
        
            | Non-Operational Temperature | -40 ~ 70° C (-40 ~ 156° F) | -40 ~ 70° C (-40 ~ 156° F) | 
        
            | Operating Humidity | 10 ~ 85% @ 40° C, non-condensing | 10 ~ 85% @ 40° C, non-condensing | 
        
            | Non-Operating Humidity | 10 ~ 95% @ 60° C, non-condensing | 10 ~ 95% @ 60° C, non-condensing | 
        
            | Operating Vibration (5 ~ 500 Hz) | 1 Grms | 1 Grms | 
        
            | Non-Operating Vibration (5 ~ 500 Hz) | 2 G | 2 G | 
        
            | Operating Shock | 10 G (with 11 ms duration, half sine wave) | 10 G (with 11 ms duration, half sine wave) | 
        
            |  | 30 G | 30 G | 
        
            | Physical Characteristics | Dimensions (W x H x D) | 482 x 177 x 348 mm (19'' x 7.0'' x 13.7'') | 482 x 177 x 348 mm (19'' x 7.0'' x 13.7'') | 
        
            | Weight | 8.5 kg (18.7 lb) | 8.5 kg (18.7 lb) |