Xylan
Ethernet Switching Modules

A comparitive guide.

The "ESM" (esm.img)

Eight 10 Mbit RJ-45 ports.
ESM8
The board is a single green PCB. 		ESM8
The label reads "ESM-8".

The "E12" (e12.img)

Twelve 10/100 Mbit RJ-45 ports.
STAtion, ACTivity, and COLlision lights for each port.
E12
The board is a single green PCB. 		E12
Note the ports are in two blocks of six.

The "FESM" (fesm.img)

Eight 100 Mbit-only Fast ethernet RJ-45 ports.
FESM
The module consists of two 100Mbit submodules resting on an HSM (high-speed module) main board. 		FESM
Note the ports are in two blocks of four.

The "Mammoth" Ethernet (mesm.img)

Twelve 10/100 Mbit RJ-45 ports.
LiNK and ACTivity lights for each port. 
 5    M-Ether/12 Enabled       D1    80650865 02/04/98 3.4.5
         5015826 Operational                           00:20:da:91:01:f0
MESM
One green board with black heat sinks resting on the Mammoth ASIC's. A distinctive property is the voltage regulator circuit (with the red coil) in the left-center. 		MESM
Note the ports are in three blocks of four, unlike the "E12".

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