Physical Features - US Robotics USR4204 User Manual

Physical Features

1. Terminal Port - RS-232 port for connection to modem or computer serial port to
configure and manage the USR4204 and connected devices.
The terminal port supports an RS-232 asynchronous serial DTE connection via an RJ45 jack.
See appendix A for pinout details. Terminal port activity can be monitored using the two
adjacent LEDs. Both LEDs light when the terminal or modem connected to this port signals
that it's ready to receive or transmit data. For a terminal it is the DTR signal, for a modem it
is the DCD signal. The left LED flickers when data is transmitted from the terminal port, the
right LED flickers when data is received by the terminal port.
2. Serial Ports – Connect RS-232 network devices with RJ45 cables for device
management.
The four serial ports are RS-232 asynchronous serial DCEs presented on RJ45 jacks. See
appendix A for pinout details. Each serial port is represented by two adjacent LEDs, which
light when the port is selected. The left LED flickers when data is transmitted from the serial
port, the right LED flickers when data is received by the serial port.
3. Mains Input Port - Connect a C13 power cord from a nearby power outlet to the mains
input port to provide power to additional network devices.
The mains power input port is an IEC C14 fused inlet, rated for 8 amps maximum.
4. Power Output Ports - Connect power cords from up to two network devices (rated for a
total of 8 amps combined) for individual power management.
The power out ports are IEC C13 outlets, individually rated for 8 amps maximum.
WARNING: The combined power requirement of the equipment
connected to all the USR4204 outputs must not exceed the USR4204
maximum input rating of 8 Amps.
5. External Power Supply Input - Connect the included Versa Power Kit to power the
USR4204.
USR4204 User Guide
Page 8 of 52