9
Hard Disk Trays
Each of the 1U4500’s hard disk trays has a lock, a latch, and two LED indicators:
Hard Disk Trays
Item Description
Lock • Use the lock to physically secure the hard disk to the unit
Latch • Use to open and remove or close and secure the tray
HDD Power LED • Solid blue: hard disk is powered on
HDD Access/Error
LED
• Blinking green: system is accessing data on the hard disk
• Blinking red: a hard disk error has occurred
Rear Panel

1U4500R

The rear panel of the 1U4500R houses most of the USB and Ethernet connections,
as well as the eSATA port, system fan, and power connector. See the table below
for descriptions of each:
Power Connector Power Connector
Power Switch Power Switch USB Ports (A Type) LAN Port
Power LED Power LED System Fan eSATA Port Serial Port
USB Ports (B Type) WAN Port
1U4500 Back Panel
Item Description
eSATA Port • eSATA port for high-speed storage expansion
USB Ports • USB 2.0 ports for compatible USB devices, such as digital
cameras, USB disks, and USB printers
WAN Port • WAN port for connecting to an Ethernet network through a
switch or router
LAN Port • LAN port that can be used for connection sharing
Power Switch • Switch for power supply
System Fan • System fan that exhausts heat from the unit
Serial Port • This port is for factory use only
Power Connector s • Connect the included power cords to these connectors

1U4500S

The rear panel of the 1U4500S is similar to the 1U4500R, but with a single power
connector:
Power Connector
Power Switch USB Ports (A Type) LAN Port
System Fan eSATA Port Serial Port
USB Ports (B Type) WAN Port