21

23

25

27

29

31

33

GND

GND

GND

GND

GND

GND

GND

3301690 CPU Card

22WRITE DATA#

24WRITE GATE#

26TRACK 0#

28WRITE PROTECT#

30READ DATA#

32SIDE 1 SELECT#

34DISK CHANGE#

Table 3-1: FDD Connector Pinouts

Figure 3-2: FDD Connector Location

33

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IBM 3301690 user manual FDD Connector Pinouts, FDD Connector Location