3Com 5500-EI PWR, Getting Started Manual

Page: 34 / 118

34 C
HAPTER
2: I
NSTALLING THE
S
WITCH
3Com recommends that you use at least Category 5 twisted pair cable —
the maximum segment length for this type of cable is 100 m (328 ft.).
Table 11 Cables required to connect the Switch to other devices if
auto-negotiation is disabled
CAUTION: If you want to install the Switch using a Category 5E or
Category 6 cable, 3Com recommends that you briefly connect the cable
to a grounded port before connecting network equipment. If you do not,
the cable’s Electrostatic Discharge (ESD) may damage the Switch's port.
You can create a grounded port by connecting all wires at one end of a
UTP cable to an earth ground point, and the other end to a female RJ-45
connector located, for example, on a Switch rack or patch panel. The
RJ-45 connector is now a grounded port.
3Com recommends that you use Category 5 twisted pair cable — the
maximum segment length for this type of cable is 100 m (328 ft).
Cross-over Cable Straight-through Cable
Switch to Switch
(MDIX to MDIX)
✓ ✕
Switch to Hub
(MDIX to MDIX)
✓ ✕
Switch to PC (NIC)
(MDIX to MDI)
✕ ✓
DUA1715-0AAA02.book Page 34 Wednesday, March 23, 2005 11:17 AM