<s>
The	O
n	O
Series	O
is	O
a	O
Dell	O
product	O
line	O
that	O
does	O
not	O
ship	O
with	O
a	O
pre-installed	O
version	O
of	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
Apparently	O
prohibited	O
from	O
shipping	O
computers	O
without	O
an	O
operating	B-General_Concept
system	I-General_Concept
by	O
an	O
existing	O
licensing	O
agreement	O
with	O
Microsoft	O
,	O
Dell	O
instead	O
ships	O
these	O
systems	O
with	O
either	O
the	O
open-source	O
FreeDOS	B-Application
operating	B-General_Concept
system	I-General_Concept
or	O
the	O
Ubuntu	B-Operating_System
Linux	I-Operating_System
distribution	I-Operating_System
not	O
preinstalled	O
,	O
but	O
on	O
install	O
disks	O
.	O
</s>
<s>
The	O
company	O
has	O
come	O
under	O
fire	O
for	O
making	O
the	O
FreeDOS	B-Application
and	O
Linux-powered	O
machines	O
no	O
cheaper	O
and	O
more	O
difficult	O
to	O
purchase	O
than	O
identical	O
systems	O
running	O
Windows	O
.	O
</s>
