J21: Chassis Fan Power Connector; Jp3: Wake On Lan Connector - TMC TI6NB User Manual

Chapter 5 Installation
Hard Disk Drive LED Connector: Pins 10 and 20
This connector connects to the hard drive activity LED on
control panel. This LED will flash when the HDD is being
accessed.

5.12 J21: Chassis Fan Power Connector

J21 is a 3-pin header for the CPU fan power connector. The fan must be a
12V fan.
1 2 3

5.13 JP3: Wake on LAN Connector

JP3 is a 3-pin header for the Wake on LAN function on the motherboard.
The following table shows the pin out assignments of this connector.
Wake on LAN will function properly only with an ATX power supply
with 5VSB that has 200mA.
3 2 1
26 TI6NB Pentium II 440BX ATX Motherboard User's Manual
J20 Pin # Signal Name
10
20
J21 Pin # Signal Name
1 Rotation
2 +12V
3 Ground
JP3 Pin # Signal Name
1 +5VSB
2 Ground
3 Wake on LAN
Ground
5V