Asus N55SL Manual page 63

Twisted-Pair Cable
The cable used to connect the Ethernet card to a host (generally
a Hub or Switch) is called a straight-through Twisted Pair Ethernet
(TPE). The end connectors are called RJ-45 connectors, which are
not compatible with RJ-11 telephone connectors. If connecting two
computers together without a hub in between, a crossover LAN
cable is required (Fast-Ethernet model). (Gigabit models support
auto-crossover so a crossover LAN cable is optional.)
Example of the Notebook PC connected to a Network Hub or Switch
for use with the built-in Ethernet controller.
Network cable with RJ-45
connectors
Notebook PC User Manual
Network Hub or Switch
63