Lenovo ThinkCentre E51 User Manual - Page 19

Input/output, features, Expansion, Power, Security, Preinstalled, software

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Input/output features v 25-pin, Extended Capabilities Port (ECP)/Extended Parallel Port (EPP) v 9-pin serial connector v Six 4-pin, USB connectors (two on front panel and four on rear panel) v Standard mouse connector v Standard keyboard connector v Ethernet connector v VGA monitor connector v Five audio connectors (headphone and microphone on front panel and line in, line out, and microphone on rear panel) Expansion v Four drive bays v Three 32-bit peripheral component interconnect (PCI) adapter connectors v One accelerated graphics port (AGP) expansion connector (some models) v One PCI Express x16 expansion connector (some models) v One PCI Express x1 expansion connector (some models) Power v 250 W power supply with manual voltage selection switch v Manual 50/60 Hz input frequency v Advanced Configuration and Power Interface (ACPI) support Security features v User and administrator passwords for BIOS access v Support for a padlock loop v Startup sequence control v Startup without diskette drive, keyboard, or mouse v Unattended start mode v Hard disk I/O control v Serial and parallel port I/O control Preinstalled software Your computer might come with preinstalled software. If it does, an operating system, device drivers to support built-in features, and other support programs are included. Chapter 1. Installing options 3

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Input/output
features
v
25-pin,
Extended
Capabilities
Port
(ECP)/Extended
Parallel
Port
(EPP)
v
9-pin
serial
connector
v
Six
4-pin,
USB
connectors
(two
on
front
panel
and
four
on
rear
panel)
v
Standard
mouse
connector
v
Standard
keyboard
connector
v
Ethernet
connector
v
VGA
monitor
connector
v
Five
audio
connectors
(headphone
and
microphone
on
front
panel
and
line
in,
line
out,
and
microphone
on
rear
panel)
Expansion
v
Four
drive
bays
v
Three
32-bit
peripheral
component
interconnect
(PCI)
adapter
connectors
v
One
accelerated
graphics
port
(AGP)
expansion
connector
(some
models)
v
One
PCI
Express
x16
expansion
connector
(some
models)
v
One
PCI
Express
x1
expansion
connector
(some
models)
Power
v
250
W
power
supply
with
manual
voltage
selection
switch
v
Manual
50/60
Hz
input
frequency
v
Advanced
Configuration
and
Power
Interface
(ACPI)
support
Security
features
v
User
and
administrator
passwords
for
BIOS
access
v
Support
for
a
padlock
loop
v
Startup
sequence
control
v
Startup
without
diskette
drive,
keyboard,
or
mouse
v
Unattended
start
mode
v
Hard
disk
I/O
control
v
Serial
and
parallel
port
I/O
control
Preinstalled
software
Your
computer
might
come
with
preinstalled
software.
If
it
does,
an
operating
system,
device
drivers
to
support
built-in
features,
and
other
support
programs
are
included.
Chapter
1.
Installing
options
3