IBM Aptiva Hardware Maintenance Guide

5-28
DIMM Configurations
The 2137 system board has two DIMM sockets. A maximum of 256KB
memory may be installed. The 2138 system board has three DIMM sockets. A
maximum of 384KB memory may be installed.
You can install 8MB, 16MB, 32MB, 64MB, or 128MB 3.3V DIMM at any
sockets and with any combinations.
System Board Connector Pin Signals
Monitor Port Signals
Pin Signal Name I/O Pin Signal Name I/O
1 Red Video O 9 +5 V dc
2 Green Video O 10 Synch Ground
3 Blue Video O 11 Monitor ID Bit 0 I
4 Monitor ID Bit 2 I 12 SDA I
5 Synch Ground 13 Horizontal Synch O
6 Red Ground 14 Vertical Synch O
7 Green Ground 15 SCL I
8 Blue Ground
Serial Port Signals
Pin Signal Name I/O Pin Signal Name I/O
1 Data Carrier Detect I 6 Data Set Ready I
2 Receive Data I 7 Request To Send O
3 Transmit Data O 8 Clear To Send I
4 Data Terminal
Ready
O 9 Ring Indicator I
5 Signal Ground

IBM Aptiva Specifications

General

CPU	Intel Pentium
RAM	8 MB to 64 MB
Operating System	Windows 95
Graphics	S3, ATI
Optical Drive	CD-ROM
Ports	Serial, Parallel, PS/2
Expansion Slots	ISA, PCI