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Apple Macintosh External Drive pinout

connector or cable wiring scheme

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This connector is present on the Macintosh 128K, 512K,512K enhanced, Plus, SE, SE/30, Classic, Classic II/Performa 200, portable, IIcx, IIci, IIsi, and IIvi/IIvx/Performa 600.

19 pin D-SUB female connector layout

19 pin D-SUB female connector
at the computer




A Macintosh 800K External Drive or an Apple 3.5 Drive can be connected to the Macintosh 512K enhanced, Plus, SE, SE/ 30, Classic, Classic II/Performa 200, IIcx, IIci, IIsi, Portable, and IIvi/IIvx/Performa 600.
Ports and Pinouts External Floppy Drive Connector: DB-19 - 23 Connect an Apple SuperDrive to a Macintosh SE (FDHD upgrade), SE/30, Classic, Classic II, IIcx, IIci, IIsi, Portable, and IIvi/IIvx/Performa 600.
Connect a Hand Disk 20 to a Macintosh 512K, 512K enhanced, Plus, and SE.
Pin Name Dir Description
1CGND---Chassis ground
2CGND---Chassis ground
3CGND---Chassis ground
4CGND---Chassis ground
5-12V-->-12 VDC
6+5V-->+5 VDC
7+12V-->+12 VDC
8+12V-->+12 VDC
9n/c-Not connected
10PWM?Regulates speed of the drive
11CA0?Control line to send commands to the drive
12CA1?Control line to send commands to the drive
13CA2?Control line to send commands to the drive
14LSTRB?Control line to send commands to the drive
15WrReq-?Turns on the ability to write data to the drive
16HdSel?Control line to send commands to the drive
17Enbl2-?Enables the Rd line (else Rd is tristated)
18Rd<--Data actually read from the drive
19Wr-->Data actually written to the drive

Note: Direction is Computer relative Diskdrive.


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19 pin D-SUB male connector diagram

19 pin D-SUB male connector
at the cable

Pinouts.ru > Disk drives connectors pinouts listing >  Pinout of Apple Macintosh External Drive and layout of 19 pin D-SUB female connector and 19 pin D-SUB male connector
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Source(s) of this and additional information: Apple Tech Info Library, Article ID: TECHINFO-0001424; Ben Harris 0 reports
Last updated at Sat Jun 25 2005. Submit additions or corrections for this document. Is this document correct or incorrect? What is your opinion?
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