DB-9 to DB-25 Adapter or Cable

Used to adapt serial ports to the proper size

25 Pin			9 Pin			Signal-RS232
Connector		Connector		
1			n/a			Protective Ground
2			3			TX Transmit
3			2			RX Recieve
4			7			RTS Request to Send
5			8			CTS Clear to Send	
6			6			DSR Data set Ready
7			5			Signal Ground
8			1			DCD Data carrier detect
9			n/a			+ Transmit
11			n/a			- Transmit
18			n/a			+ Recieve
20			4			DTR Data terminal ready
22			9			RI Ring Indicator
23			n/a			DSRD Data signal-rate indicator
25			n/a			- Recieve

DB-9 to DB-25 Adapter

Opposite of Above

Serial Port Loopback (9 Pin)

Used to verify that a port is working.

9 PIN D-SUB FEMALE

Name	Pin	Pin	Name
DCD	1	6	DSR
DCD	1	9	RI
RXD	2	3	TXD
DTR	4	6	DSR
RTS	7	8	CTS

Serial Port Loopback (25 Pin)

Used to verify that a port is working.

25 PIN D-SUB FEMALE

Name	Pin	Pin	
	1	7	
	2	3
	4	5,8
	6	11,20,22
	15	17,23
	18	25       

Parallel Port Loopback (IBM, Checkit and Most Others)

Used to verify that a Printer port is working.

Name		Pin	Pin	Name
Strobe	1	13	Select
Data Bit0	2	15	Error
Acknowledge	10	16	Input Prime
Busy		11	17	Select In
Paper Out	12	14	Auto Feed XT

Parallel Port Loopback (Norton)

Used to verify that a port is working. Norton Utilities: Norton Diagnostics

Name		Pin	Pin	Name
Data Bit 0	2	15	Error
Data Bit 1	3	13	Select
Data Bit 2	4	12	Paper Out
Data Bit 3	5	10	Acknowledge
Data Bit 4	6	11	Busy

Power Supply to Motherboard AT P8-P9

Pin#	Color		Function
1	Orange	Power Good
2	Red		+5V DC
3	Yellow	+12V DC
4	Blue		-12V DC
5	Black		Ground
6	Black		Ground
7	Black		Ground
8	Black		Ground
9	White		-5V DC
10	Red		+5V DC
11	Red		+5V DC
12	Red		+5V DC

Power Supply to Motherboard ATX

Pin#	Color		Function
1	Orange	+3.3V DC
2	Orange	+3.3V DC
3	Black		Ground
4	Red		+5V DC
5	Black		Ground
6	Red		+5V DC
7	Black		Ground
8	Gray		Power OK
9	Purple	+5V standby
10	Yellow	+12V DC
(11)	Orange(22) 	+3.3V DC
(11)	Brown(22)	3.3V sense
12	Blue		-12V DC
13	Black		Ground
14	Green		PS-ON
15	Black		Ground
16	Black		Ground
17	Black		Ground
18	White		-5V DC
19	Red		+5V DC
20	Red		+5V DC

Power Supply plug 5.25-inch 4-pin Molex

Pin#	Color		Function
1	Yellow	+12V DC
2	Black		Ground
3	Black		Ground
4	Red		+5V DC

Power supply plug 3.5-inch

Pin#	Color		Function
1	Yellow	+12V DC
2	Black		Ground
3	Black		Ground
4	Red		+5V DC

Hercules/Monochrome Adapter

Pin#	Label		Function
1	GND		Ground
2	GND		Ground
3	N.C.		Not Connected
4	N.C.		Not Connected
5	N.C.		Not Connected
6	INTENSITY	Intensity
7	VIDEO		TTL video signal
8	H-SYNC	Horizontal Synch (18.432KHz)
9	V-SYNC	Vertical Synch (50Hz)

CGA Color Graphics Display Adapter

Pin#	Label		Function
1	GND		Ground
2	GND		Ground
3	RED		Red color signal
4	GREEN		Green color signal
5	BLUE		Blue color signal
6	INTENSITY	+ Intensity
7	RES		Reserved
8	H-SYNC	Horizontal Synch
9	V-SYNC	Vertical Synch

CGA Composite Video Used on Commodore systems old Apples

Pin#		Label			Function
1(pin)	1.5 Volt Dc 	Video Signal
2(shell)	GND			Ground

EGA Enhanced Graphics Adapter

Pin#	Label		Function
1	GND		Ground
2	RED2		Secondary Red color signal
3	RED		Red color signal
4	GREEN		Green color signal
5	BLUE		Blue color signal
6	GREEN2	Secondary Green color signal + Intensity
7	BLUE2 	Secondary Blue color signal + Monochrome
8	H-SYNC	Horizontal Synch
9	V-SYNC	Vertical Synch

Color VGA Adapter

Pin#	Label		Function
1	RED		Red color signal
2	GREEN		Green color signal
3	BLUE		Blue color signal
4	ID2		Monitor identification bit 2
5	N.C.		Not Connected
6	GND-RED	Ground Red signal
7	GND-GREEN	Ground Green signal
8	GND-BLUE	Ground Blue signal
9	N.C.		Not Connected
10	GND-SYNC	Ground Sync signal
11	ID1		Monitor identification bit 1
12	ID0		Monitor identification bit 0
13	H-SYNC	Horizontal Synchronization
14	V-SYNC	Vertical Synchronization
15	N.C.		Not connected

Standard Converter SUN/SGI (no Vertical)

Standard Converter SUN/SGI (with Vertical)

Standard Converter POWERPC (with Vertical)

EIDE IDE 40 Pin Cable

Pin#	Signal	Description	Function
1	RESET		Reset
2	GND		Ground
3	DD7		Data Line 7
4	DD8		Data Line 8
5	DD6		Data Line 6
6	DD9		Data Line 9
7	DD5		Data Line 5
8	DD10		Data Line 10
9	DD4		Data Line 4
10	DD11		Data Line 11
11	DD3		Data Line 3
12	DD12		Data Line 12
13	DD2		Data Line 2
14	DD13		Data Line 13
15	DD1		Data Line 1
16	DD14		Data Line 14
17	DD0		Data Line 0
18	DD15		Data Line 15
19	GND		Ground
20	Select	Selection for Pin 20
21	DMARQ		DMA Request	(optional)
22	GND		Ground
23	DIOW
24	GND		Ground
25	DIOR
26	GND		Ground
27	IORDY		IDE device still busy (optional)
28	Reserved	Used for Cable Select
29	DMACK		DMA Acknowledge (optional)
30	GND		Ground
31	INTRQ		Interupt Request
32	IOCS16	16 Bit data transfer
33	DA1		Bit 1 Address bus, for addressing the
			Internal data register on the hard drive
34	PDIAG		Passed Diag	Hard Drive self test concluded
35	DA0		Bit 0 Address bus
36	DA2		Bit 2 Address bus
37	CS0		Selection Command Block Register	
38	CS1		Selection Command Block Register	
39	DA/SP	Drive Active	Hard drive is active / after slave drive
					Communicates its presence
40	GND		Ground

10 Base T and 100 Base T CrossOver Cable

Plug	Code		 Plug	Code
1	T2--------\ /------1	T2
2	R2-\       X	 /-2	R2
3	T3--\-----/ \---/--3	T3	
4	nc   \ /-------/   4	NC
5	nc    x            5	NC
6	R3---/ \-----------6	R3
7	nc		   7	NC
8	nc		   8	NC

Category-5 10 base T Cable and Category-5 100 base T Cable

COLOR CODES FOR STANDARD WIRING
Plug	Color
1	Orange-White
2	Orange
3	Green-White
4	Blue
5	Blue-White
6	Green
7	Brown-WHite
8	Brown

IEEE 1394 - Cable Ends
6 pin FireWire
PIN#	SIGNAL	PIN#	SIGNAL
1	POWER	4	TPB+
2	GND	5	TPA-
3	TPB-	6	TPA+
PIN#	SIGNAL	PIN#	SIGNAL
1	TPB-	3	TPA-
2	TPB+	4	TPA+

MPC-2 AUDIO
Audio Connector MPC-2
PIN#	SIGNAL	COLOR	PIN#	SIGNAL	COLOR
1	Audio +	Red	3	GND	Black
2	GND	Black	4	Audio -	White

Parallel Data Transfer Cable

Serial Data Transfer Null Modem Cable

USB Universal Serial Bus Cable

Pin#	Label		Function	Standard Wire Color
1	+5 Volts	Power		Red
2	Data -		Signal -	White
3	Date +		Signal +	Green
4	Ground 	Ground		Black

USB Universal Serial Bus Dual Port

Pin#	Label		Function
1	+5 Volts	Power
2	Data -		Signal -
3	Date +		Signal +
4	Ground 	Ground
5	NC		No Connection
6	+5 Volts	Power
7	Data -		Signal -
8	Date +		Signal +
9	Ground 	Ground
10	NC		No Connection

PS/2 KEYBOARD OR MOUSE
6 pin miniDIN Male
PIN#	SIGNAL	PIN#	SIGNAL
1	DATA	4	+5
2	NC	5	CLOCK
3	GND	6	NC

PC/AT KEYBOARD
5 pin DIN Male
PIN#	SIGNAL	PIN#	SIGNAL
1	CLOCK	4	GND
2	DATA	5	+5
3	NC

SUN KEYBOARD AND MOUSE
8 pin miniDIN Male
PIN#	SIGNAL	PIN#	SIGNAL
1	GND	5	KYBD RCV
2	GND	6	KYBD XMT
3	+5	7	PWRN
4	MOUSE	8	+5