LEX Unit Description
The LEX Extender (LEX) unit connects to the computer using a standard USB 2.0 cable. Power for this unit is
provided by the USB on the host computer.
Front View
Rear View
ITEM TYPE
DESCRIPTION
1
Power LED (Blue)
LED turns on when power is supplied.
LED is off when no power is supplied by the host computer.
2
Link LED (Green)
Indicates a valid ExtremeUSB® link is established between the LEX
and REX units over the Cat 5e cable.
LED turns on when link between LEX and REX is established.
LED is off when there is no link between LEX and REX.
3
Host LED (Green)
Indicates that the Ranger 2204 system is properly enumerated on
the host computer. LED blinks when in a suspended state.
4
Activity LED (Amber)
Indicates activity when data transmission is active between LEX
and REX units. LED blinks intermittently with or without a USB
device connected. When the LEX and REX are in suspend mode,
the LED is off.
5
Power Port (optional)
Not required in normal operation. An optional 5V power supply
can be connected to the LEX unit to provide power if the USB port
on the host computer is not capable of delivering 500mA to the
unit, (however such cases should be very rare).
6
USB Type B connector
Used to connect the LEX unit to the host computer.
7
Link Port (RJ45)
Accepts RJ45 connector for Cat 5e cable (or better) to connect the
LEX unit to the REX unit.
4
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