Pinouts >  HDD and other storage devices connectors
25 pin D-SUB male connector layout
25 pin D-SUB male connector
  DSub Hi DSub
Request 1 49
Message 2 46
Input/Output 3 50
Reset 4 45
Acknowledge 5 44
Busy 6 43
Data Bus 0 8 26
Data Bus 3 10 29
Data Bus 5 11 31
Data Bus 6 12 32
Data Bus 7 13 33
Control/Data 15 48
Attention 17 41
Select 19 47
Data Parity 20 34
Data Bus 1 21 27
Data Bus 2 22 28
Data Bus 4 23 30
Termination Power 25 38

Note: All the other pins (7+9+14+16+18+24) at the DSub should be connected to pins 1-25 at the Hi-density D-Sub connector

50 pin hi-density D-SUB male connector layout
50 pin hi-density D-SUB male connector
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