<s>
A	O
2-in-1	B-Device
PC	I-Device
,	O
also	O
known	O
as	O
convertible	B-Device
laptop	I-Device
,	O
2-in-1	B-Device
tablet	I-Device
,	O
2-in-1	B-Device
laptop	I-Device
,	O
2-in-1	O
detachable	O
,	O
laplet	B-Device
,	O
tabtop	B-Device
,	O
laptop	B-Device
tablet	B-Device
,	O
or	O
simply	O
2-in-1	O
,	O
is	O
a	O
portable	B-Device
computer	I-Device
that	O
has	O
features	O
of	O
both	O
tablets	B-Device
and	O
laptops	B-Device
.	O
</s>
<s>
Before	O
the	O
emergence	O
of	O
2-in-1s	O
and	O
their	O
denomination	O
as	O
such	O
,	O
technology	O
journalists	O
used	O
the	O
words	O
convertible	O
and	O
hybrid	O
to	O
denominate	O
pre-2-in-1	O
portable	B-Device
computers	I-Device
:	O
Convertible	O
typically	O
denominated	O
those	O
that	O
featured	O
a	O
mechanism	O
to	O
conceal	O
the	O
physical	O
keyboard	O
by	O
sliding	O
or	O
rotating	O
it	O
behind	O
the	O
chassis	O
,	O
and	O
hybrid	O
those	O
that	O
featured	O
a	O
hot-pluggable	O
,	O
complementary	O
,	O
physical	O
keyboard	O
.	O
</s>
<s>
Both	O
pre-2-in-1	O
convertibles	O
and	O
hybrids	O
were	O
crossover	O
devices	O
that	O
combined	O
features	O
of	O
both	O
tablets	B-Device
and	O
laptops	B-Device
.	O
</s>
<s>
Models	O
of	O
2-in-1	B-Device
PC	I-Device
were	O
each	O
similarly	O
denominated	O
either	O
a	O
2-in-1	B-Device
convertible	I-Device
or	O
2-in-1	O
detachable	O
,	O
respectively	O
,	O
and	O
despite	O
borrowing	O
the	O
terminology	O
of	O
the	O
pre-2-in-1	O
PCs	O
,	O
the	O
two	O
species	O
of	O
2-in-1	O
PCs	O
are	O
distinct	O
from	O
the	O
two	O
species	O
of	O
pre-2-in-1	O
PCs	O
because	O
2-in-1	O
PCs	O
have	O
additional	O
features	O
of	O
traditional	O
laptops	B-Device
.	O
</s>
<s>
2-in-1	O
PCs	O
consist	O
of	O
portable	B-Device
computer	I-Device
components	O
within	O
light	O
and	O
thin	O
chassis	O
,	O
and	O
exemplify	O
technological	O
convergence	O
.	O
</s>
<s>
They	O
are	O
convenient	O
for	O
media	O
consumption	O
and	O
non-intensive	O
tasks	O
in	O
tablet	B-Device
mode	O
yet	O
useful	O
for	O
content	O
production	O
in	O
laptop	B-Device
mode	O
.	O
</s>
<s>
2-in-1	O
convertibles	O
are	O
tablets	B-Device
with	O
the	O
ability	O
to	O
rotate	O
,	O
fold	O
,	O
or	O
slide	O
the	O
keyboard	O
behind	O
the	O
display	O
.	O
</s>
<s>
However	O
,	O
the	O
Dell	B-Device
XPS	I-Device
Duo	I-Device
is	O
unique	O
in	O
that	O
the	O
display	O
sits	O
in	O
a	O
frame	O
that	O
allows	O
the	O
screen	O
to	O
be	O
spun	O
.	O
</s>
<s>
Rotational-convertible	O
format	O
is	O
where	O
in	O
addition	O
to	O
the	O
conventional	O
hinging	O
action	O
,	O
the	O
central	O
single	O
hinge	O
mechanism	O
is	O
also	O
able	O
to	O
rotate	O
about	O
a	O
central	O
axis	O
perpendicular	O
to	O
the	O
keyboard	O
surface	O
,	O
such	O
that	O
the	O
laptop	B-Device
can	O
be	O
turned	O
into	O
a	O
thick	O
tablet	B-Device
.	O
</s>
<s>
Most	O
netvertibles	O
have	O
the	O
option	O
to	O
support	O
active	O
(	O
electromagnetic	O
)	O
stylus	O
and/or	O
touch	B-Device
screen	I-Device
(	O
resistive	O
or	O
capacitive	O
)	O
,	O
some	O
being	O
ruggedized	O
such	O
as	O
Panasonic	O
Toughbook	O
CF	O
series	O
.	O
</s>
<s>
In	O
most	O
cases	O
,	O
the	O
keyboard	O
part	O
provides	O
few	O
,	O
if	O
any	O
,	O
additional	O
features	O
(	O
most	O
often	O
a	O
touchpad	B-Application
,	O
as	O
in	O
the	O
HP	O
Spectre	O
x2	O
)	O
.	O
</s>
<s>
However	O
,	O
the	O
keyboards	O
of	O
some	O
detachable	O
provide	O
additional	O
features	O
similar	O
to	O
those	O
of	O
a	O
docking	B-Device
station	I-Device
such	O
as	O
additional	O
I/O	B-General_Concept
-ports	O
and	O
supplementary	O
batteries	O
.	O
</s>
<s>
For	O
instance	O
,	O
the	O
Surface	B-Device
Book	I-Device
can	O
leverage	O
the	O
discrete	O
GPU	B-Architecture
in	O
the	O
keyboard	O
upon	O
the	O
keyboard	O
's	O
connection	O
.	O
</s>
<s>
This	O
is	O
true	O
for	O
all	O
devices	O
of	O
the	O
Surface	B-Device
and	I-Device
Surface	I-Device
Pro	I-Device
lines	O
.	O
</s>
<s>
Although	O
not	O
an	O
typical	O
laptop	B-Device
sizes	O
,	O
but	O
due	O
to	O
both	O
Smartphone/Phablet	O
and	O
Tablet	B-Device
hardware	O
is	O
getting	O
more	O
powerful	O
,	O
some	O
third	O
party	O
accessories	O
OEM	O
had	O
developed	O
a	O
keyboard	O
accessories	O
which	O
allowed	O
either	O
though	O
wireless	O
connection	O
or	O
connection	O
via	O
the	O
USB	B-Protocol
port	O
to	O
the	O
handheld	O
device	O
that	O
allowed	O
it	O
to	O
work	O
like	O
an	O
laptop	B-Device
.	O
</s>
<s>
Operating	B-General_Concept
system	I-General_Concept
such	O
as	O
Android	O
even	O
show	O
the	O
mouse	O
cursor	O
when	O
connected	O
to	O
a	O
mouse	O
,	O
where	O
as	O
Ubuntu	O
Touch	O
take	O
it	O
even	O
further	O
by	O
allowing	O
the	O
user	O
to	O
modified	O
the	O
UI	O
to	O
an	O
typical	O
desktop	O
mode	O
with	O
window	O
which	O
allowed	O
desktop	O
level	O
multitasking	O
,	O
albeit	O
with	O
smaller	O
screen	O
.	O
</s>
<s>
2-in-1s	O
fall	O
in	O
the	O
category	O
of	O
hybrid	O
or	O
convertible	O
tablets	B-Device
but	O
are	O
distinct	O
in	O
that	O
they	O
run	O
a	O
full-featured	O
desktop	B-General_Concept
operating	I-General_Concept
system	I-General_Concept
and	O
have	O
I/O	B-General_Concept
ports	O
typically	O
found	O
on	O
laptops	B-Device
,	O
such	O
as	O
USB	B-Protocol
and	O
DisplayPort	B-Protocol
.	O
</s>
<s>
The	O
most	O
prominent	O
element	O
is	O
the	O
keyboard	O
that	O
allows	O
the	O
2-in-1	O
to	O
provide	O
the	O
ergonomic	O
typing	O
experience	O
of	O
a	O
laptop	B-Device
.	O
</s>
<s>
While	O
2-in-1s	O
fall	O
in	O
a	O
category	O
distinct	O
from	O
laptops	B-Device
,	O
they	O
loosely	O
parallel	O
the	O
traits	O
of	O
the	O
Ultrabook	B-Device
device	O
category	O
,	O
having	O
light	O
and	O
thin	O
chassis	O
,	O
power-efficient	O
CPUs	O
,	O
and	O
long	O
battery	O
lives	O
.	O
</s>
<s>
They	O
are	O
distinguished	O
from	O
traditional	O
Ultrabooks	B-Device
by	O
the	O
inclusion	O
of	O
a	O
touchscreen	B-Device
display	O
and	O
a	O
concealable	O
or	O
detachable	O
keyboard	O
.	O
</s>
<s>
The	O
earliest	O
device	O
that	O
can	O
be	O
considered	O
a	O
2-in-1	O
detachable	O
is	O
the	O
Compaq	B-Device
Concerto	I-Device
from	O
1993	O
.	O
</s>
<s>
It	O
came	O
preinstalled	O
with	O
Windows	B-Application
3.1	I-Application
and	O
Windows	B-Device
for	I-Device
Pen	I-Device
Computing	I-Device
,	O
and	O
had	O
a	O
cabled	O
detachable	O
keyboard	O
,	O
and	O
battery	O
powered	O
stylus	O
.	O
</s>
<s>
In	O
June	O
1994	O
,	O
IBM	O
introduced	O
the	O
ThinkPad	B-Operating_System
360P	O
,	O
which	O
features	O
a	O
display	O
that	O
can	O
be	O
rotated	O
backwards	O
and	O
closed	O
down	O
into	O
a	O
pen-operated	O
tablet	B-Device
.	O
</s>
<s>
While	O
Packard	O
Bell	O
,	O
Acer	O
and	O
HP	O
all	O
had	O
Microsoft	B-Application
Windows	I-Application
based	O
2-in-1s	O
by	O
2011	O
,	O
Lenovo	O
released	O
the	O
well	O
reviewed	O
Windows	B-Application
2-in-1	O
:	O
The	O
X220	O
Tablet	B-Device
variant	O
of	O
the	O
ThinkPad	B-Operating_System
X220	O
,	O
successor	O
of	O
2010	O
's	O
ThinkPad	B-Operating_System
X201	O
Tablet	B-Device
.	O
</s>
<s>
Microsoft	O
started	O
its	O
own	O
line	O
of	O
2-in-1s	O
with	O
the	O
introduction	O
of	O
the	O
Surface	B-Device
Pro	I-Device
series	O
,	O
the	O
first	O
of	O
which	O
was	O
released	O
in	O
February	O
2013	O
.	O
</s>
<s>
It	O
had	O
a	O
10.6-inch	O
(	O
27cm	O
)	O
display	O
,	O
Intel	B-Device
Core	I-Device
i5	O
CPU	O
,	O
and	O
included	O
the	O
Pro	O
Pen	O
stylus	O
and	O
a	O
detachable	O
keyboard	O
that	O
doubled	O
as	O
a	O
protective	O
screen	O
cover	O
.	O
</s>
<s>
In	O
2015	O
Microsoft	O
introduced	O
the	O
Surface	B-Device
Book	I-Device
series	O
,	O
which	O
,	O
similar	O
to	O
the	O
Surface	B-Device
Pro	I-Device
series	O
,	O
features	O
a	O
detachable	O
keyboard	O
cover	O
and	O
Surface	O
Pen	O
stylus	O
.	O
</s>
<s>
Samsung	O
entered	O
the	O
2-in-1	B-Device
PC	I-Device
market	O
with	O
the	O
release	O
of	O
the	O
Windows-based	O
Samsung	B-Device
Galaxy	I-Device
TabPro	I-Device
S	I-Device
,	O
which	O
was	O
released	O
in	O
March	O
2016	O
.	O
</s>
<s>
It	O
had	O
a	O
12-inch	O
display	O
,	O
Intel	B-Device
Core	I-Device
m3	O
CPU	O
,	O
a	O
first-party	O
keyboard	O
attachment	O
,	O
and	O
a	O
TabPro	O
Pen	O
.	O
</s>
<s>
Its	O
successor	O
,	O
the	O
Galaxy	B-Device
Book	I-Device
,	O
was	O
released	O
in	O
February	O
2017	O
.	O
</s>
<s>
Coming	O
in	O
a	O
10.6-inch	O
model	O
and	O
a	O
12-inch	O
model	O
,	O
the	O
Galaxy	B-Device
Book	I-Device
has	O
an	O
improved	O
detachable	O
keyboard	O
and	O
include	O
an	O
S	O
Pen	O
.	O
</s>
<s>
Google	B-Application
entered	O
the	O
2-in-1	O
market	O
after	O
it	O
announced	O
the	O
Pixel	O
Slate	O
in	O
October	O
2018	O
.	O
</s>
<s>
It	O
runs	O
on	O
ChromeOS	B-Operating_System
and	O
features	O
a	O
12.3-inch	O
display	O
.	O
</s>
<s>
It	O
includes	O
two	O
USB-C	O
ports	O
,	O
but	O
it	O
omits	O
the	O
headphone	B-Device
jack	I-Device
.	O
</s>
<s>
Since	O
2012	O
,	O
a	O
number	O
of	O
other	O
prominent	O
laptop	B-Device
manufacturers	O
,	O
such	O
as	O
Dell	O
,	O
Asus	O
,	O
and	O
Sony	O
have	O
also	O
begun	O
releasing	O
their	O
own	O
2-in-1s	O
.	O
</s>
<s>
While	O
the	O
iPad	B-Device
Pro	I-Device
has	O
optional	O
Smart	O
Keyboard	O
and	O
Apple	B-Device
Pencil	I-Device
accessories	O
,	O
Apple	O
has	O
yet	O
to	O
release	O
a	O
true	O
2-in-1	B-Device
PC	I-Device
in	O
a	O
detachable	O
form-factor	O
and	O
with	O
a	O
similar	O
desktop	B-General_Concept
OS	I-General_Concept
,	O
citing	O
the	O
quote	O
below	O
.	O
</s>
<s>
In	O
April	O
2012	O
Apple	O
's	O
CEO	O
Tim	O
Cook	O
,	O
answering	O
to	O
the	O
question	O
of	O
the	O
researcher	O
Anthony	O
Sacconaghi	O
about	O
a	O
possible	O
hybrid	O
of	O
iPad	B-Device
and	O
MacBook	B-Device
,	O
compared	O
a	O
2-in-1	O
to	O
a	O
combination	O
of	O
"	O
a	O
toaster	O
and	O
a	O
refrigerator	O
"	O
that	O
"	O
does	O
n’t	O
please	O
anyone	O
"	O
:	O
</s>
<s>
2-in-1s	O
are	O
natively	O
supported	O
by	O
the	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
Google	B-Application
ChromeOS	B-Operating_System
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
Various	O
other	O
Linux	B-Application
distributions	O
also	O
support	O
some	O
touch	O
features	O
of	O
2-in-1s	O
,	O
though	O
they	O
are	O
generally	O
unsupported	O
by	O
hardware	O
vendors	O
.	O
</s>
