<s>
Windows	B-Device
NT	I-Device
3.51	I-Device
is	O
a	O
major	O
release	O
of	O
the	O
Windows	B-Device
NT	I-Device
operating	B-General_Concept
system	I-General_Concept
developed	O
by	O
Microsoft	O
and	O
oriented	O
towards	O
businesses	O
.	O
</s>
<s>
It	O
is	O
the	O
third	O
version	O
of	O
Windows	B-Device
NT	I-Device
and	O
was	O
released	O
on	O
May	O
30	O
,	O
1995	O
,	O
eight	O
months	O
following	O
the	O
release	O
of	O
Windows	B-Device
NT	I-Device
3.5	I-Device
.	O
</s>
<s>
The	O
most	O
significant	O
enhancement	O
offered	O
in	O
this	O
release	O
was	O
that	O
it	O
provides	O
client/server	B-Operating_System
support	O
for	O
inter-operating	O
with	O
Windows	B-Application
95	I-Application
,	O
which	O
was	O
released	O
almost	O
three	O
months	O
after	O
NT	B-Device
3.51	I-Device
.	O
</s>
<s>
Windows	B-Device
NT	I-Device
4.0	I-Device
became	O
its	O
successor	O
a	O
year	O
later	O
.	O
</s>
<s>
Mainstream	O
support	O
for	O
Windows	B-Device
NT	I-Device
3.51	I-Device
Workstation	I-Device
ended	O
on	O
December	O
31	O
,	O
2000	O
,	O
and	O
extended	O
support	O
ended	O
on	O
December	O
31	O
,	O
2001	O
,	O
while	O
Windows	B-Device
NT	I-Device
3.51	I-Device
Server	O
mainstream	O
support	O
ended	O
on	O
September	O
30	O
,	O
2000	O
,	O
followed	O
by	O
extended	O
support	O
on	O
September	O
30	O
,	O
2002	O
.	O
</s>
<s>
Both	O
editions	O
were	O
succeeded	O
by	O
Windows	B-Device
NT	I-Device
4.0	I-Device
Workstation	O
and	O
Windows	B-Device
NT	I-Device
4.0	I-Device
Server	O
,	O
respectively	O
.	O
</s>
<s>
The	O
release	O
of	O
Windows	B-Device
NT	I-Device
3.51	I-Device
was	O
dubbed	O
"	O
the	O
PowerPC	B-Architecture
release	O
"	O
at	O
Microsoft	O
.	O
</s>
<s>
The	O
original	O
intention	O
was	O
to	O
release	O
a	O
PowerPC	B-Architecture
edition	O
of	O
NT	B-Device
3.5	I-Device
,	O
but	O
according	O
to	O
Microsoft	O
's	O
David	O
Thompson	O
,	O
"	O
we	O
basically	O
sat	O
around	O
for	O
9	O
months	O
fixing	O
bugs	O
while	O
we	O
waited	O
for	O
IBM	O
to	O
finish	O
the	O
Power	B-Architecture
PC	I-Architecture
hardware	O
"	O
.	O
</s>
<s>
Editions	O
of	O
NT	B-Device
3.51	I-Device
were	O
also	O
released	O
for	O
the	O
x86	B-Operating_System
,	O
MIPS	B-Device
,	O
and	O
Alpha	B-Device
architectures	O
.	O
</s>
<s>
New	O
features	O
introduced	O
in	O
Windows	B-Device
NT	I-Device
3.51	I-Device
include	O
PCMCIA	B-Architecture
support	O
,	O
NTFS	B-Application
file	O
compression	O
,	O
replaceable	O
WinLogon	O
(	O
GINA	O
)	O
,	O
3D	O
support	O
in	O
OpenGL	B-Application
,	O
persistent	O
IP	O
routes	O
when	O
using	O
TCP/IP	O
,	O
automatic	O
display	O
of	O
textual	O
descriptions	O
when	O
the	O
mouse	O
pointer	O
was	O
placed	O
on	O
toolbar	O
buttons	O
(	O
"	O
tooltips	O
"	O
)	O
and	O
support	O
for	O
Windows	B-Application
95	I-Application
common	O
controls	O
.	O
</s>
<s>
In	O
view	O
of	O
the	O
significant	O
difference	O
in	O
the	O
kernel	O
base	O
,	O
Windows	B-Device
NT	I-Device
3.51	I-Device
is	O
readily	O
able	O
to	O
run	O
a	O
large	O
number	O
of	O
Win32	B-Library
applications	O
designed	O
for	O
Windows	B-Application
95	I-Application
.	O
</s>
<s>
More	O
recent	O
32-bit	O
applications	O
will	O
not	O
work	O
,	O
as	O
the	O
developers	O
have	O
prevented	O
their	O
application	O
from	O
working	O
with	O
any	O
Windows	O
version	O
earlier	O
than	O
Windows	O
98	O
,	O
and	O
also	O
because	O
some	O
applications	O
do	O
not	O
work	O
properly	O
with	O
the	O
older	O
Windows	B-Device
NT	I-Device
3.51	I-Device
interface	O
.	O
</s>
<s>
Despite	O
this	O
,	O
Microsoft	O
in	O
their	O
application	O
releases	O
muddied	O
the	O
issue	O
,	O
releasing	O
32-bit	O
versions	O
of	O
Microsoft	B-Application
Office	I-Application
right	O
up	O
to	O
Office	B-Operating_System
97	I-Operating_System
(	O
the	O
last	O
version	O
of	O
Microsoft	B-Application
Office	I-Application
supported	O
on	O
NT	B-Device
3.51	I-Device
)	O
,	O
but	O
relying	O
upon	O
16-bit	B-Device
versions	O
of	O
Internet	B-Application
Explorer	I-Application
technology	O
from	O
versions	O
3.0	B-Protocol
to	O
5.0	B-Protocol
.	O
</s>
<s>
Web	O
browsers	O
based	O
on	O
and	O
including	O
Firefox	B-Application
were	O
operable	O
up	O
to	O
version	O
2.0.0.22	O
,	O
released	O
in	O
April	O
2009	O
;	O
they	O
required	O
a	O
few	O
manual	O
file	O
updates	O
to	O
work	O
without	O
compromising	O
browsing	O
security	O
.	O
</s>
<s>
Windows	B-Device
NT	I-Device
3.51	I-Device
is	O
the	O
last	O
of	O
the	O
series	O
to	O
be	O
compatible	O
with	O
the	O
Intel	B-General_Concept
80386	I-General_Concept
processor	B-General_Concept
.	O
</s>
<s>
This	O
was	O
the	O
first	O
incarnation	O
of	O
the	O
modern	O
Windows	O
GUI	B-Application
with	O
the	O
Taskbar	O
and	O
Start	O
menu	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
replace	O
the	O
Windows	O
3.x	O
Program	O
Manager/File	O
Manager	O
based	O
shell	O
with	O
Windows	O
Explorer-based	O
graphical	B-Application
user	I-Application
interface	I-Application
.	O
</s>
<s>
The	O
release	O
provided	O
capabilities	O
quite	O
similar	O
to	O
that	O
of	O
the	O
Windows	O
"	O
Chicago	O
"	O
(	O
codename	B-General_Concept
for	O
Windows	B-Application
95	I-Application
)	O
shell	O
during	O
its	O
late	O
beta	O
phases	O
;	O
however	O
,	O
it	O
was	O
intended	O
to	O
be	O
nothing	O
more	O
than	O
a	O
test	O
release	O
.	O
</s>
<s>
Both	O
releases	O
held	O
Windows	B-Protocol
Explorer	I-Protocol
builds	O
of	O
3.51.1053.1	O
.	O
</s>
<s>
The	O
preview	O
program	O
provided	O
early	O
feedback	O
for	O
the	O
Shell	B-Device
Update	I-Device
Release	I-Device
,	O
the	O
next	O
major	O
Windows	B-Device
NT	I-Device
version	O
with	O
the	O
new	O
interface	O
built-in	O
,	O
which	O
was	O
released	O
in	O
July	O
1996	O
as	O
Windows	B-Device
NT	I-Device
4.0	I-Device
.	O
</s>
<s>
Five	O
Service	O
Packs	O
were	O
released	O
for	O
NT	B-Device
3.51	I-Device
,	O
introducing	O
both	O
bug	O
fixes	O
and	O
new	O
features	O
.	O
</s>
<s>
Service	O
Pack	O
5	O
,	O
for	O
example	O
,	O
fixed	O
issues	O
related	O
to	O
the	O
Year	B-Error_Name
2000	I-Error_Name
problem	I-Error_Name
.	O
</s>
<s>
Supported	O
EIDE	O
addressing	O
schemes	O
include	O
logical	B-Device
block	I-Device
addressing	I-Device
(	O
LBA	O
)	O
,	O
ONTrack	O
Disk	O
Manager	O
,	O
EZDrive	O
,	O
and	O
extended	O
cylinder-head-sector	O
(	O
ECHS	O
)	O
.	O
</s>
