3Com SuperStack II Manual page 161

2 Prepare ports 1, 3, 5 and 7 on the lower Switch for port trunking:
a Use the web interface to ensure that the ports have an identical
configuration:
b Use the Port Trunk Setup page of the web interface to specify that
ports 1, 3, 5 and 7 are ports of the port trunk.
3 Connect port 13 on the higher Switch to port 1 on the lower Switch.
4 Connect port 15 on the higher Switch to port 3 on the lower Switch.
5 Connect port 17 on the higher Switch to port 5 on the lower Switch.
6 Connect port 19 on the higher Switch to port 7 on the lower Switch.
Port Trunk Example 161