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Description of Hardware
Description of Hardware
10/100/1000BASE-T Ports
The ES4512C/24C/48C switches contain 12/24/48 RJ-45 ports that operate at 10
Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps, full duplex. Because all ports
on these switches support automatic MDI/MDI-X operation, you can use
straight-through cables for all network connections to PCs or servers, or to other
switches or hubs. (See "1000BASE-T Pin Assignments" on page B-3.)
Each of these ports support auto-negotiation, so the optimum transmission mode
(half or full duplex), and data rate (10, 100, or 1000 Mbps) can be selected
automatically. If a device connected to one of these ports does not support
auto-negotiation, the communication mode of that port can be configured manually.
Each port also supports auto-negotiation of flow control, so the switches can
automatically prevent port buffers from becoming saturated.
SFP Slots
The Small Form Factor Pluggable (SFP) transceiver slots are shared with four of the
RJ-45 ports (ports 9~12 in the ES4512C, ports 21~24 in the ES4524C, and
ports 45~48 in the ES4548C). In its default configuration, if an SFP transceiver
(purchased separately) is installed in a slot and has a valid link on its port, the
associated RJ-45 port is disabled and cannot be used. The switches can also be
configured to force the use of an RJ-45 port or SFP slot, as required.
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- Connecting to the Console Port
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