Chapter 5: Advanced Motherboard Setup

5-10 Floppy/Hard Disk and SCSI Connections

Be aware of the following when connecting the floppy and hard disk drive cables:

A red mark on a wire typically designates the location of pin 1.

A single floppy disk drive ribbon cable has 34 wires and two connectors to provide for two floppy disk drives. The connector with the twisted wires always connects to drive A, and the connector that does not have twisted wires always connects to drive B.

Floppy Connector

The floppy connector is located on J26 and requires a 34-pin rib- bon cable for operation. See the table on the right for pin defini- tions.

Floppy Connector Pin Definitions (J26)

Pin Number

Function

Pin Number

Function

1

G N D

2

FDHDIN

3

G N D

4

Reserved

5

Key

6

FDEDIN

7

G N D

8

Index-

9

G N D

10

Motor Enable

11

G N D

12

Drive Select B-

13

G N D

14

Drive Select A-

15

G N D

16

Motor Enable

17

G N D

18

DIR-

19

G N D

20

STEP -

21

G N D

22

Write Data-

23

G N D

24

Write Gate-

25

G N D

26

Track 00-

27

G N D

28

Write Protect-

29

G N D

30

Read Data-

31

G N D

32

Side 1 Select-

33

G N D

34

Diskette

IDE Connector Pin Definitions

(J18, J19)

Pin Number

Function

Pin Number

Function

1

Reset IDE

2

G N D

3

Host Data 7

4

Host Data 8

5

Host Data 6

6

Host Data 9

7

Host Data 5

8

Host Data 10

9

Host Data 4

10

Host Data 11

11

Host Data 3

12

Host Data 12

13

Host Data 2

14

Host Data 13

15

Host Data 1

16

Host Data 14

17

Host Data 0

18

Host Data 15

19

G N D

20

Key

21

D R Q 3

22

G N D

23

I/O Write-

24

G N D

25

I/O Read-

26

G N D

27

IOCHRDY

28

BALE

29

DACK3 -

30

G N D

31

IRQ14

32

IOCS16 -

33

Addr 1

34

G N D

35

Addr 0

36

Addr 2

37

Chip Select 0

38

Chip Select 1-

39

Activity

40

G N D

 

 

 

 

IDE Connectors

There are no jumpers to config- ure the onboard IDE connectors J18 and J19. Refer to the table on the left for pin definitions.

5-23

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SUPER MICRO Computer 5010H, 5010E user manual Floppy/Hard Disk and Scsi Connections, Floppy Connector, IDE Connectors

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