The Amiga 4000's video slot is set up to handle 24-bit RGB and therefore differs physically from the 2000/3000 video slot.
Standard Video Slot Extended Video Slot
Pin Signal Pin Signal
1 Reserved 1 Ground
2 Reserved 2 Red Bit 4
3 Left Audio Out 3 Red Bit 5
4 Right Audio Out 4 Red Bit 6
5 Reserved 5 Digital Ground
6 +5VDC 6 Green Bit 4
7 Analog Red 7 Green Bit 5
8 +5VDC 8 Green Bit 6
9 Video Ground 9 Digital Ground
10 +12VDC 10 Blue Bit 5
11 Analog Green 11 Blue Bit 6
12 Video Ground 12 Ground
13 Video Ground 13 Sync-On-Green Indicator
14 CSYNC___ 14 50/60Hz Software Clock Timebase
15 Analog Blue 15 7.09/7.16 MHz Clock
16 XCLKEN___ 16 Printer Port Paper Out
17 Video Ground 17 3.55/3.58 MHz Clock
18 Burst Gate 18 Printer Port Busy
19 C4 CLOCK___ 19 Light Pen Input
20 Video Ground 20 Printer Port Acknowledgemnt Handshake
21 Video Ground 21 Printer Port Select
22 HSYNC___ (47 Ohm) 22 Digital Ground
23 B0 = DI 23 Printer Data Bit 0
24 Video Ground 24 Printer Data Bit 1
25 B3 = DB 25 Printer Data Bit 2
26 VSYNC__ (47 Ohm) 26 Printer Data Bit 3
27 G3 = DG 27 Printer Data Bit 4
28 Comp Sync (Analog) 28 Printer Data Bit 5
29 R3 = DR 29 Printer Data Bit 6
30 PIXELSW (47 Ohm) 30 Printer Data Bit 7
31 -5VDC 31 LED (audio filter bypass) Setting
32 Video Ground 32 Digital Ground
33 XCLK 33 Raw Audio Left
34 C1 CLOCK___ 34 Audio Ground
35 Reserved 35 Raw Audio Right
36 Strobe 36 Audio Ground
Amiga 4000 Only 37 reserved
38 reserved
39 Digital Ground
40 Digital Ground
41 reserved
42 reserved
43 Digital Ground
44 Digital Ground
45 Red Bit 2
46 Red Bit 3
47 Green Bit 0
48 Green Bit 1
49 Green Bit 2
50 Green Bit 3
51 Blue Bit 0
52 Blue Bit 1
53 Blue Bit 2
54 Blue Bit 3