IBM NETVISTA X40 6643 - Manual (Page 24)

v Keep power cords and cables neatly routed away from walkways and other
areas where they might be accidentally dislodged.
Connecting cables
Read the following before connecting cables:
v Connect all device cables before plugging any power cords into an electrical
outlet.
v Connect the power cords to the computer and to the other devices before
plugging them into an electrical outlet.
Important
If your computer is being connected to an Ethernet network, a Category
5 Ethernet cable must be used for operation of the system within FCC
Class A limits.
8 User Guide