Allied Telesis AT-MC103ST/FS3, FS4 - Manual (Page 16)

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You can resolve the mismatch in one of two ways:
❑ Manually configure Unit 2, if possible, so that the port connected to
the media converter is set to half-duplex.
❑ Disable auto-negotiation on the media converter using the auto-
negotiation button. With auto-negotiation on the media converter
disabled, Unit 2 will assume that the converter is capable of only half-
duplex operation, thus eliminating the mismatch in duplex modes
between the end stations.
External AC/DC Power Adapter
An external AC-to-DC power adapter is included with the media converter for
standalone operation (see Figure 3). The power adapter supplies 12 volts DC
to the media converter. Allied Telesyn supplies an approved safety compliant
AC power adapter for the 120 and 240 V AC versions with an unregulated
output of 12 V DC at 1 A. The power required for the media converter is 12 V
DC, 500 mA.
Figure 3 External AC/DC Power Adapter (North American version)