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Service Hints & Tips

Document ID: GSMH-3GKC67

Aptiva - 2161 System board connector specifications

Applicable to: World-Wide

System Board Connector Specifications

Monitor/Signal

Pin	Signal Name	I/O
1	Red Video	O
2	Green Video	O
3	Blue Video	O
4	Monitor ID Bit 2	I
5	Synch Ground
6	Red Ground
7	Green Ground
8	Blue Ground
9	+5 V dc
10	Synch Ground
11	Monitor ID Bit 0	I
12	SDA	I
13	Horizontal Synch	O
14	Vertical Synch	O
15	SCL	I

Parallel Port

Pin	Signal Name	I/O
1	Strobe	O
2	Data Bit 0	I/O
3	Data Bit 1	I/O
4	Data Bit 2	I/O
5	Data Bit 3	I/O
6	Data Bit 4	I/O
7	Data Bit 5	I/O
8	Data Bit 6	I/O
9	Data Bit 7	I/O
10	Acknowledge	I
11	Busy	I
12	Paper Empty	I
13	Select	O
14	Auto Feed	N/A
15	Error	I
16	Initalise	O
17	Select (In)	O
18	Ground	Power
19	Ground	Power
20	Ground	Power
21	Ground	Power
22	Ground	Power
23	Ground	Power
24	Ground	Power
25	Ground	Power

Serial Port

Pin	Signal Name	I/O
1	Data Carrier Detect	I
2	Receive Data	I
3	Transmit Data	O
4	Data Terminal Ready	O
5	Signal Ground
6	Data Set Ready	I
7	Request To Send	O
8	Clear To Send	I
9	Ring Indicator	I

USB (Universal Serial Bus)

Pin	Signal Name
1	+5 V dc
2	-Data
3	+Data
4	GND

On/Off Switch Connector

Pin	Signal Name
1	AUX25
2	Switch

Mouse

Pin	Signal Name	I/O
1	Mouse Data	I/O
2	No Connection
3	Ground	Power
4	+5 V dc	Power
5	Mouse Clock	I/O
6	No Connection

Modem Wake Up on Ring Detect Connector

Pin	Signal Name
1	EXT_WAKEUP
2	Ground

Speaker Connector

Pin	Signal Name
1, 2	Internal
2, 4	External

Keyboard

Pin	Signal Name	I/O
1	Data	I/O
2	Mouse Data
3	Ground	Power
4	+5 V dc	Power
5	Clock	I/O
6	Mouse Clock

Power Cable Connector

Pin	Signal Name
1	Power Good (+ 5 V dc)
2	+ 5 V dc
3	+ 12 V dc
4	- 12 V dc
5	Ground
6	Ground
7	Ground
8	Ground
9	- 5 V dc
10	+ 5 V dc
11	+ 5 V dc
12	+ 5 V dc

Power Cable Connector 3.3 V dc

Pin	Signal Name
1	3.3 V dc
2	3.3 V dc
3	3.3 V dc
4	Ground
5	Ground
6	Ground

Diskette Cable Connector

Pin	Signal Name	I/O
1	Ground
2	Density Select	O
3	No Connection
4	No Connection
5	Ground
6	No Connection
7	Ground
8	Index	I
9	Ground
10	Motor Enable 0	O
11	Ground
12	Drive Select 1	O
13	Ground
14	Drive Select 0	O
15	Ground
16	Motor Enable 1	O
17	Ground
18	Direction	O
19	Ground
20	Step	O
21	Ground
22	Write Data	I
23	Ground
24	Write Enabled	O
25	Ground
26	Track 0	I
27	Ground
28	Write Protect	I
29	Ground
30	Read Data	I
31	Ground
32	Select Head 1	O
33	Ground
34	Diskette Change	I

Note: The diskette drive signal cable for drive A has a twist for the Drive Select and Motor Enable signals.

Hard Disk Cable Connectors

Pin	Signal Name	I/O
1	Host Reset	O
2	Ground
3	Host Data 7	I/O
4	Host Data 8	I/O
5	Host Data 6	I/O
6	Host Data 9	I/O
7	Host Data 5	I/O
8	Host Data 10	I/O
9	Host Data 4	I/O
10	Host Data 11	I/O
11	Host Data 3	I/O
12	Host Data 12	I/O
13	Host Data 2	I/O
14	Host Data 13	I/O
15	Host Data 1	I/O
16	Host Data 14	I/O
17	Host Data 0	I/O
18	Host Data 15	I/O
19	Ground	Power
20	No Connection
21	No Connection
22	Ground
23	Host IOW	O
24	Ground	Power
25	Host IOR	O
26	Ground	Power
27	I/O Channel Ready	I
28	No Connection
29	No Connection
30	Ground	Power
31	Host IRQ	I
32	No Connection
33	Host A1	O
34	No Connection
35	Host AO	O
36	Host A2	O
37	Host CSO	O
38	Host CS1	O
39	ACTIVE	I
40	Ground	Power

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	Hint Category	Hardware Installation/Configuration, System Boards
	Date Created	28-04-97
	Last Updated	12-03-99
	Revision Date	12-03-2000
	Brand	IBM Aptiva
	Product Family	Aptiva
	Machine Type	2161
	Model
	TypeModel
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