Choosing The Correct Cables; Solving Problems Indicated By Leds - 3Com SuperStack II Switch 3300 FX User Manual

If there is evidence of a problem, see "Solving Problems Indicated by
LEDs" on page SI.
Choosing the Fiber optic cables should be fitted with SC connectors.
Correct Cables
Both the RJ45 ports on the front of the Switch are configured as MDIX
(cross-over). If you want to make a connection to another MDIX port, you
need a cross-over cable. Most of the 10BASE-T and 10OBASE-TX ports on
3Com devices are MDIX-only. Many ports on workstations and servers are
configured as MDI (straight-through). If you want to make a connection
to an MDI port, you need to use a standard straight-through cable. This is
illustrated in Figure 10.
Figure 10 Connecting other devices to the Switch 3300 FX