GS-4012F/4024 User’s Guide
45 Chapter 3 Hardware Overview
3.1.1 Console Port
For local management, you can use a computer with terminal emulation software configured
to the following parameters:
• VT100 terminal emulation
• 9600 bps
• No parity, 8 data bits, 1 stop bit
• No flow control
Connect the male 9-pin end of the console cable to the console port of the switch. Connect the
female end to a serial port (COM1, COM2 or other COM port) of your computer.
3.1.2 Gigabit Ethernet Ports
The GS-4024 has 24 100/1000Mbps auto-negotiating, auto-crossover Gigabit Ethernet ports.
In 10/100/1000 Mbps Gigabit Ethernet, the speed can be 100Mbps or 1000Mbps and the
duplex mode can be half duplex (for 100 Mbps) or full duplex.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed and duplex
mode (full duplex or half duplex) of the connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or
crossover Ethernet cable.
3.1.2.1 Default Ethernet Settings
The factory default negotiation settings for the Ethernet ports on the switch are:
• Speed: Auto
• Duplex: Auto
• Flow control: on
3.1.3 SFP Slots
The GS-4012F comes with 12 SFP (Small Form-factor Pluggable) slots for mini-GBIC
(Gigabit Interface Converter) transceivers. A transceiver is a single unit that houses a
transmitter and a receiver. The switch does not come with transceivers. You must use
transceivers that comply with the SFP transceiver MultiSource Agreement (MSA). See the
SFF committee’s INF-8074i specification Rev 1.0 for details.
The switch has four pairs of Gigabit Ethernet/mini-GBIC ports. The mini-GBIC ports have
priority over the Gigabit ports. This means that if a mini-GBIC port and the corresponding
Gigabit port are connected at the same time, the Gigabit port will be disabled.
You can change transceivers while the switch is operating. You can use different transceivers
to connect to Ethernet switches with different types of fiber-optic connectors.
