REX Unit Description
The REX Extender (REX) unit provides USB Type A ports for standard USB devices. The REX unit allows you to
connect up to four USB devices directly. The REX unit is powered by an external AC adapter and can supply
up to 500mA to each USB port. Additional devices may be connected by attaching USB hubs to the REX unit.
Front View
Rear View
ITEM
TYPE
DESCRIPTION
1
Device Port (USB
Type A)
Accepts USB device(s).
2
Device LED
(Green/Orange)
Indicates when a USB device is connected to the Device Port.
Solid green when device is plugged in and active.
Off when device is in suspend mode or REX unit is powered off.
Orange when the REX unit detects an overcurrent condition, and the
attached USB device attempts to draw more than 500mA of current.
3
Power LED (Blue)
LED turns on when power is supplied.
LED is off when no power is supplied.
4
Link LED (Green)
Indicates a valid ExtremeUSB® link is established between the LEX and REX
over 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.
5
Host LED (Green)
Indicates that the Ranger 2204 system is properly enumerated on the host
computer. LED blinks when in a suspend state.
6
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.
7
Power Port
Connects to the AC power supply. Required at REX for proper operation.
8
Link Port (RJ45)
Accepts RJ45 connector for Cat 5e cable (or better) to connect the LEX unit
to the REX unit.
5
2
3
4
5
6
1
1
1
1
7
8
