[{TableOfContents }]
!SIO-Connector
{{{
     __________________________ 
    /                          \ 
   /   2   4   6   8   10  12   \ 
  /                              \
 /   1   3   5   7   9   11  13   \
/__________________________________\
}}}
||lower row||upper row
|1 Clock Input|2 Clock Output 
|3 Data Input|4 Ground 
|5 Data Output |6 Ground 
|7 ~Command|8 Motor control
|9 ~Proceed |10 +5V DC/Ready
|11 Audio Input |12 +12V DC
|13 ~Interrupt

Notes:
* ~=active low
* Pin 10: +5V DC not on 1200XL
* Pin 12: +12V DC on 400/800 only. 1400XL/1450XLD?

!Joystick-Connector
{{{
_________________________
\                       /
 \  1   2   3   4   5  /
  \                   /  
   \  6   7   8   9  /
    \_______________/ 
}}}
||lower row||upper row
|1 Up|6 Trigger 
|2 Down|7 +5V DC 
|3 Left|8 Ground 
|4 Right|9 Pot A
|5 Pot B
1-4 see [STICK0]-[STICK3], 3 also Paddle Trigger A see [PTRIG0], 4 also Paddle Trigger B see [PTRIG1]\\
5,9 see [PADDL0]-[PADDL7]\\
6 see [STRIG0]-[STRIG3],  also Light Pen Input, see [LPENV], [LPENH]

!Monitor Connector

{{{
   3 o           o 1

    5 o         o 4
           o
           2
}}}
5 PIN DIN 180° (DIN41524) FEMALE at the computer.

||Pin||Description
|1| Composite Luminance (Composite Video on PAL 600XL)
|2| Ground
|3| Audio Output
|4| Composite Video
|5| Composite Chroma (not on 800XL (except "800XLF"), 1200XL; Ground on PAL 600XL)

!Power Connector
not on 400, 800, 1200XL
{{{
    7 o         o 6

  3 o             o 1

    5 o         o 4
           o
           2
}}}
7 PIN DIN 'C' FEMALE at the computer.
||Pin||	 Description
|1| +5V
|2| Shield
|3| Ground
|4| +5V
|5| Ground
|6| +5V
|7| Ground

Power consumption
||Model||Current @ 5VDC
|130XE|1.5A
|65XE| 1.0A
|800XE| 1.0A
|XE| 1.0A
|600XL| 1.5A
|800XL| 1.5A

!Cartridge
to be added

!Enhanced Cartridge Interface (ECI)/Expansion port (130XE, 800XE, & later 65XE)
{{{
  A B C D E F H 
  o o o o o o o 
  o o o o o o o 
  1 2 3 4 5 6 7 
}}}
||upper row ||lower row
|A. Reserved | 1. EXTSEL' External Select 
|B. IRQ' Interrupt request | 2. RST' Reset output 
|C. HALT' Halt CPU |3. D1XX' Chip select at area $D1xx 
|D. A13 CPU Address bus line | 4. MPD' Math Pack (FP) Disable 
|E. A14 CPU Address bus line |5. Audio input 
|F. A15 CPU Address bus line | 6. REF' Refresh cycle 
|H. GND Ground |7. +5V

!Parallel Bus
to be added