Lantronix MINI FAST LFH4-M - Manual (Page 10)

2.5 Connecting the LFH Hub
Use the following procedures to connect 100BASE-TX network devices
to the hub:
NOTE: If the Uplink Port is being utilized on the LFH hub, the adja-
cent Port may not be used. Conversely, if that Port is being utilized, the
Uplink Port may not be connected.
The following table describes the two cable types:
Make sure that the length of the straight-through cable between the
LFH hub and the other device does not exceed 100 meters, including all
patch cables and cross-connect wires.
Make sure that the length of the straight-through cable between two
hubs does not exceed 5 meters.
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LFH4-M Ports 1-4
Uplink Port
LFH8-M Ports 1-8
PC, Workstation S C
Server S C
Hub, Switch port C S
Hub, Switch uplink port S C
S = Straight Cable C = Crossover cable
Straight cable Crossover cable
Pin 1 TD+ RD+
Pin 2 TD- RD-
Pin 3 RD+ TD+
Pin 6 RD- TD-