3.5"Hot-swap: 24 , 

lnternal 2.5": 2 ，

2.5"Hot-swap (Option): 2

1+1 Redundant

1 * Power Status , 2 * LAN Activity, 1 * UID Status , 

1 * HDD Status，1 Warning Status

Power On/Off, System Reset,  2 x USB 3.0

Middle: 4 x 80 mm (T=38 mm)   15000 PWM,

Middle: 4 x 80 mm (T=56 mm)   15000 PWM, (Option)

24pcie TO 16pcie and 8pice(Option) ,  24pcieTO 3*8x((Option) ,

8654 TO 8x((Option)

24-port12Gb/s-SAS,-Expander 

(Option), 

2-port NVME(Option)

2-port 12GB(Option)