** Panelbook 550 VGA Cable
26HD Inputs	Signal Description	
--------------------------------------
 1		Vertical Sync
 2		Horizontal Sync
 8		Blue Analog
 6		Intensity TTL
 7		Green TTL
 9		Red Analog
16		Blue TTL
18		Green Analog
20,21		GND
22		GND
23		Key (TTL/Analog Sensor)
24		GND
25		VGA/no video sensor
26		Monochrome digital (Hercules)

** VGA Cable Pin connections
** Wire Color may vary by manufacturer check pins with multimeter.
15HD	Wire Color	Signal Description	26HD
----------------------------------------------------
 1	Black		Red Analog		9
 2	Black/W		Green Analog		18
 3	Brown		Blue Analog		8
 4	Brown/W		ID Bit 2		24
 5	Orange		Digital Ground		24	
 6	Green		Red Ground		21
 7	Blue		Green Ground		22,23
 8	Purple		Blue Ground		20
10	White		Sync Return		24
11	Red		ID BIT 1		24
12	Red/W		ID BIT 0		25
13	Yellow		Horizontal Sync		2
14	Pink		Vertical Sync		1

** Notes
1. Hold Menu button down for second menu.
2. Arrow keys align image on LCD.