Hard disk size, I/o expansion, Port for floppy disk drive – Apple Macintosh PowerBook 2400c User Manual
Page 17: Table 1-3, Hard disk size 1, I/o expansion 1, Port for floppy disk drive 1

C H A P T E R 1
Delta Guide to the PowerBook 2400c Computer
Features
7
Hard Disk Size
1
The storage capacity of the built-in hard disk in the Macintosh PowerBook 2400c
computer is 1.3 GB.
I/O Expansion
1
Because of its small size, the PowerBook 2400c computer does not have an expansion
bay, so it does not accept an internal CD-ROM drive or floppy-disk drive. The user can
attach an external floppy disk drive to a port on the back of the computer. Other external
drives can be connected to the SCSI port. Figure 1-2 on page 3 shows the locations of the
ports.
Port for Floppy Disk Drive
1
The back of the Macintosh PowerBook 2400c computer has a separate port for
connecting a Macintosh PowerBook external floppy disk drive.
The connector for the external floppy disk drive is a Molex type 52629-2611. Table 1-3
shows the signal assignments on the floppy disk drive connector. A slash character (/)
before a signal name indicates an active-low signal.
Table 1-3
Signals on floppy disk drive connector
Pin
Signal
Pin
Signal
1
GND
2
FL_ENABLE
3
N.C.
4
HDSEL
5
GND
6
MB_+5V
7
GND
8
MB_+5V
9
WRDATA
10
/DEV_IN
11
PHASE(0)
12
PHASE(1)
13
PHASE(2)
14
MB_+5V
15
PHASE(3)
16
/WRREQ
17
N.C.
18
N.C.
19
GND
20
MB_+5V
21
FD_RD
22
GND
23
GND
24
GND
25
GND
26
GND