System Board Type 8639 (FRU 93H1758)
System Board Type 8639 (FRU 93H1758)
1 Power Connector (5Vdc)
2 Password Jumper (CMOS Clear)
3 Configuration Switch Set (SW1)
4 Diskette Connector
5 Battery
6 Power Connector (3.3Vdc)
7 Processor Socket
8 Cache Memory Module Connector
9 Power LED Connector
10 SIMM Connectors (Bank 1/2)
11 DIMM Connector (Bank 0)
12 Riser Connector
13 VESA Passthrough Connectors
14 Video Upgrade Sockets
15 Video Port
16 ECP/EPP Parallel Port
17 USB Ports (1/2)
18 Serial (A) Port
19 Mouse Port
20 Keyboard Port
21 Infrared Port
Processor Speed Switch Settings (SW1 1-4)
| Speed |
SW1-1 |
SW1-2 |
SW1-3 |
SW1-4 |
| 75MHz |
Off |
Off |
On |
On |
| 90MHz |
Off |
Off |
On |
Off |
| 100MHz |
Off |
Off |
Off |
On |
| 120MHz |
On |
Off |
On |
Off |
| 133MHz |
On |
Off |
Off |
On |
| 150MHz |
On |
On |
On |
Off |
| 166MHz |
On |
On |
Off |
On |
| 200MHz |
Off |
On |
Off |
On |
Additional Switch Settings (SW1 5-6)
| Description |
SW1-5 |
SW1-6 |
| Normal Diskette Operation |
N/A |
Off (D) |
| Read-Only Diskette Operation |
N/A |
On |
Password Jumper Settings
| Jumper |
Setting |
Description |
| J15 |
1-2 |
Password Clear |
| J15 |
2-3 (D) |
Password Enabled |
Recommended combinations of memory module kits
Each bank must contain a matched pair of SIMMs having the same
size and speed. The max. (SIMMs/DIMMs) memory supported is 160MB (192MB).
When installing SIMM memory, a matched-pair is first installed
into Bank 1, and then into Bank 2.
- Industry standard 72-pin tin-led SIMMs and 168-pin gold-lead DIMMs are supported.
- Install only parity SIMMs/DIMMs to enable patrity.
- A mix of parity and non-parity SIMMs/DIMMs will configure as non-parity.
Supported SIMMs and DIMMs
| Type |
Speed |
Access
Mode |
Parity |
Sizes
Supported |
| SIMM |
60 ns |
EDO |
N |
4, 8, 16, 32 MB |
| SIMM |
60 ns |
FP |
Y |
8, 16, 32 MB |
| SIMM |
70 ns |
FP |
N |
4, 8, 16, 32 MB |
| SIMM |
70 ns |
FP |
Y |
4, 8 MB |
| |
|
|
|
|
| DIMM |
60 ns |
EDO |
N |
8, 16, 32 MB |
| DIMM |
60 ns |
FP |
Y |
16, 32 MB |
NOTE: FP = Fast Page / EDO = Extended Data Out
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