Apple SCSI connector

#Computer#Harddisk interfaces#Apple

This connector is present on the Macintosh PowerBook series (except the Duo 210/230).

30 pin Apple HDI-30 connector pin-out & layout

30 pin Apple HDI-30 connector  at the Apple computer, looking into cable-side connector

PinNameDescription
1SCSI-ModeSCSI disk mode enable signal
2Data0Data bit 0
3GNDSignal ground
4Data1Data bit 1
5Termpwr +5 voltstermination power
6Data2Data bit 2
7Data3Data bit 3
8GNDSignal ground
9ACKAcknowledge
10GNDSignal ground
11Data4Data bit 4
12GNDSignal ground
13GNDSignal ground
14Data5Data bit 5
15GNDSignal ground
16Data6Data bit 6
17GNDSignal ground
18Data7Data bit 7
19PARITYData parity
20GNDSignal ground
21REQRequest
22GNDSignal ground
23BUSYBusy
24GNDSignal ground
25ATNAttention
26C/DControl/data
27RSTReset
28MSGMessage
29SELSelect
30I/OInput/output

Apple Macintosh External Floppy disk drive connector

Apple SCSI disk adapter connector