<s>
ZenBook	B-Device
is	O
a	O
family	O
of	O
ultrabooks	B-Device
low-bulk	O
laptop	B-Device
computers	I-Device
produced	O
by	O
Asus	O
.	O
</s>
<s>
The	O
first	O
ZenBooks	B-Device
were	O
released	O
in	O
October2011	O
,	O
and	O
the	O
original	O
range	O
of	O
products	O
was	O
amended	O
and	O
expanded	O
during	O
2012	O
.	O
</s>
<s>
Models	O
range	O
from	O
12-inch	O
laptops	B-Device
featuring	O
power	O
efficient	O
components	O
but	O
lacking	O
connectivity	O
and	O
having	O
only	O
integrated	O
graphics	B-Architecture
processors	I-Architecture
,	O
to	O
15-inch	O
laptops	B-Device
with	O
discrete	B-Device
graphics	I-Device
processing	O
units	O
and	O
optical	O
disc	O
drives	O
.	O
</s>
<s>
Most	O
(	O
though	O
not	O
all	O
)	O
ZenBooks	B-Device
use	O
Intel	B-Device
Core	I-Device
ultra-low-voltage	I-Device
processors	I-Device
and	O
Nvidia	O
GPUs	B-Architecture
when	O
integrated	O
graphics	O
are	O
not	O
used	O
.	O
</s>
<s>
Asus	O
introduced	O
new	O
models	O
with	O
touch	O
screens	O
to	O
take	O
advantage	O
of	O
Windows	B-Application
8	I-Application
after	O
its	O
release	O
in	O
late	O
2012	O
.	O
</s>
<s>
Most	O
models	O
drew	O
comparisons	O
to	O
the	O
MacBook	B-Device
Air	I-Device
.	O
</s>
<s>
The	O
ZenBook	B-Device
mainly	O
competes	O
against	O
computers	O
such	O
as	O
Acer	O
's	O
Aspire	B-Device
,	O
Dell	O
's	O
Inspiron	B-Device
and	O
XPS	B-Device
,	O
HP	O
's	O
Pavilion	B-Device
,	O
HP	O
Stream	O
and	O
Envy	B-Device
,	O
Lenovo	O
's	O
IdeaPad	B-Operating_System
,	O
Samsung	O
's	O
Sens	B-Operating_System
and	O
Toshiba	O
's	O
Satellite	B-Device
.	O
</s>
<s>
Asus	O
designed	O
the	O
ZenBooks	B-Device
with	O
brushed	O
aluminium	O
chassis	O
and	O
high	O
rigidity	O
,	O
rather	O
than	O
plastic	O
,	O
the	O
usual	O
laptop	B-Device
construction	O
material	O
.	O
</s>
<s>
A	O
pattern	O
of	O
concentric	O
circles	O
on	O
the	O
lids	O
is	O
said	O
to	O
represent	O
ripples	O
in	O
water	O
and	O
represent	O
the	O
"	O
zen	B-Application
philosophy	I-Application
"	O
that	O
designers	O
wanted	O
to	O
portray	O
when	O
creating	O
the	O
laptops	B-Device
.	O
</s>
<s>
ZenBooks	B-Device
have	O
been	O
generally	O
well	O
received	O
due	O
to	O
their	O
chassis	O
design	O
and	O
appearance	O
as	O
well	O
as	O
the	O
high	O
quality	O
screens	O
used	O
in	O
later	O
models	O
.	O
</s>
<s>
However	O
,	O
the	O
touchpad	B-Application
software	O
was	O
found	O
to	O
be	O
erratic	O
,	O
particularly	O
on	O
the	O
early	O
models	O
and	O
some	O
of	O
the	O
models	O
received	O
criticism	O
for	O
their	O
high	O
prices	O
.	O
</s>
<s>
In	O
2009	O
Asus	O
released	O
the	O
UX50V	O
,	O
a	O
15-inch	O
laptop	B-Device
that	O
was	O
focused	O
on	O
energy	O
efficiency	O
and	O
had	O
a	O
thin	O
profile	O
.	O
</s>
<s>
The	O
laptop	B-Device
was	O
rated	O
poorly	O
by	O
reviewers	O
as	O
it	O
under-performed	O
and	O
had	O
mediocre	O
battery	O
life	O
,	O
despite	O
the	O
installed	O
energy	O
efficient	O
hardware	O
.	O
</s>
<s>
Although	O
not	O
branded	O
as	O
one	O
,	O
it	O
bore	O
the	O
same	O
"	O
UX	O
"	O
product	O
code	O
as	O
many	O
of	O
the	O
later	O
ZenBooks	B-Device
and	O
was	O
an	O
early	O
foray	O
into	O
the	O
ultraportable	B-Device
market	O
.	O
</s>
<s>
The	O
ZenBook	B-Device
name	O
was	O
proposed	O
by	O
Asus	O
chairman	O
Jonney	O
Shih	O
to	O
reflect	O
the	O
"	O
zen	B-Application
philosophy	I-Application
"	O
applied	O
to	O
the	O
design	O
.	O
</s>
<s>
ZenBooks	B-Device
were	O
the	O
first	O
opportunity	O
to	O
put	O
this	O
into	O
practice	O
,	O
the	O
crossover	O
being	O
achieved	O
,	O
he	O
said	O
,	O
by	O
"	O
the	O
unfolding	O
of	O
the	O
laptop	B-Device
from	O
the	O
side	O
recalling	O
the	O
elegance	O
of	O
minute	O
and	O
hour	O
hand	O
movements	O
"	O
.	O
</s>
<s>
The	O
reference	O
to	O
watches	O
is	O
also	O
reflected	O
in	O
the	O
marketing	O
of	O
ZenBooks	B-Device
;	O
Asus	O
published	O
design	O
sketches	O
overlaying	O
an	O
open	O
ZenBook	B-Device
on	O
a	O
watch	O
face	O
,	O
and	O
video	O
advertisements	O
feature	O
similar	O
imagery	O
.	O
</s>
<s>
The	O
concentric	O
circles	O
on	O
the	O
lid	O
of	O
were	O
intended	O
to	O
look	O
like	O
ripples	O
in	O
water	O
and	O
to	O
reflect	O
"	O
philosophical	O
ideas	O
such	O
as	O
the	O
infinite	O
nature	O
of	O
Zen	B-Application
thinking	O
and	O
self-improvement	O
"	O
.	O
</s>
<s>
The	O
bodies	O
of	O
the	O
ZenBooks	B-Device
are	O
made	O
of	O
aluminium	O
,	O
chosen	O
for	O
its	O
light	O
weight	O
,	O
strength	O
,	O
vibration	O
dampening	O
,	O
appearance	O
and	O
acoustic	O
properties	O
.	O
</s>
<s>
Reviewers	O
have	O
noted	O
the	O
resulting	O
superior	O
rigidity	O
and	O
complimented	O
the	O
appearance	O
of	O
the	O
ZenBook	B-Device
range	O
.	O
</s>
<s>
To	O
preserve	O
space	O
,	O
some	O
Zenbooks	B-Device
use	O
two	O
PCBs	O
connected	O
by	O
a	O
communications	O
ribbon	O
so	O
it	O
can	O
have	O
ports	O
on	O
both	O
sides	O
of	O
the	O
device	O
,	O
with	O
a	O
heatsink	O
and	O
fan	O
centred	O
between	O
them	O
.	O
</s>
<s>
In	O
2017	O
,	O
Asus	O
debuted	O
ScreenPad	O
with	O
the	O
ZenBook	B-Device
Pro	O
15	O
UX580	O
.	O
</s>
<s>
The	O
ScreenPad	O
replaces	O
the	O
regular	O
touchpad	B-Application
with	O
a	O
colour	O
capactive	O
touchscreen	O
display	O
.	O
</s>
<s>
This	O
technology	O
was	O
then	O
in	O
2019	O
included	O
in	O
the	O
ZenBook	B-Device
13	O
(	O
UX334	O
)	O
,	O
ZenBook	B-Device
14	O
(	O
UX434	O
)	O
and	O
ZenBook	B-Device
15	O
(	O
UX534	O
)	O
and	O
offered	O
optionally	O
on	O
the	O
lower	O
end	O
lineup	O
of	O
VivoBook	B-Device
S	I-Device
laptops	B-Device
.	O
</s>
<s>
In	O
2019	O
,	O
as	O
a	O
successor	O
the	O
2018	O
's	O
ZenBook	B-Device
Pro	O
,	O
the	O
ZenBook	B-Device
Duo	O
and	O
ZenBook	B-Device
Pro	O
Duo	O
feature	O
two	O
screens	O
–	O
one	O
at	O
the	O
regular	O
position	O
and	O
the	O
other	O
above	O
keyboard	O
.	O
</s>
<s>
This	O
second	O
display	O
resulted	O
into	O
the	O
move	O
of	O
the	O
keyboard	O
nearer	O
to	O
the	O
chin	O
and	O
the	O
touchpad	B-Application
to	O
where	O
a	O
numberpad	O
would	O
be	O
similarly	O
to	O
Asus	O
 '	O
gaming	O
ROG	O
Zephyrus	O
laptop	B-Device
.	O
</s>
<s>
Numerous	O
Zenbook	B-Device
models	O
with	O
resolution	O
specifications	O
of	O
QHD+	O
(	O
3200×1800	O
)	O
and	O
4K	O
(	O
3840×2160	O
)	O
utilize	O
Pentile	O
RG/BW	O
displays	O
,	O
which	O
are	O
regarded	O
by	O
some	O
as	O
a	O
"	O
shady	O
practice	O
"	O
and	O
"	O
sort	O
of	O
cheating	O
"	O
.	O
</s>
<s>
1	O
x	O
microSD	O
card	O
slotUX392FNIntel	O
UHD	O
Graphics	O
620	O
+	O
NVIDIA	B-Application
GeForce	I-Application
MX150ZenBook	O
S	O
UX393UX393	O
December	O
2020	O
?	O
</s>
<s>
Intel®	O
Core™	O
i5-1135G78/16GB	O
LPDDR4X512MB/1TB	O
M.2	O
NVMe™	O
PCIe®	O
3.0	O
SSD1.35	O
kg306	O
x	O
224	O
x	O
7	O
...	O
</s>
<s>
1TB	O
M.2	O
NVMe™	O
PCIe®	O
SSD	B-Device
with	O
32GB	O
Intel®	O
Optane™	O
MemoryWi-Fi	O
6( 	O
802.11ax	O
)	O
+Bluetooth	O
5.0	O
(	O
Dual	O
band	O
)	O
2*263WHrs	O
,	O
3S1P	O
,	O
3-cell	O
Li-ion1.40	O
kg	O
(	O
3.09	O
lbs	O
)	O
31.12	O
x	O
22.12	O
x	O
1.69	O
~	O
1.69	O
cm	O
(	O
12.25	O
"	O
x	O
8.71	O
"	O
x	O
0.67	O
"	O
~	O
0.67	O
"	O
)	O
1x	O
USB	O
3.2	O
Gen	O
2	O
Type-A	O
,	O
2x	O
Thunderbolt™	O
4	O
supports	O
display	O
/	O
power	O
delivery	O
,	O
</s>
<s>
The	O
first	O
official	O
ZenBooks	B-Device
,	O
the	O
ZenBook	B-Device
UX21E	O
and	O
UX31E	O
drew	O
comparisons	O
to	O
the	O
MacBook	B-Device
Air	I-Device
and	O
it	O
was	O
regarded	O
as	O
an	O
"	O
excellent	O
rival	O
"	O
by	O
CNET	O
reviewer	O
Andrew	O
Hoyle	O
.	O
</s>
<s>
Other	O
aspects	O
of	O
the	O
laptops	B-Device
that	O
reviewers	O
liked	O
were	O
the	O
Bang	O
and	O
Olufsen	O
speakers	O
,	O
fast	O
boot	O
times	O
due	O
to	O
Asus	O
 '	O
BIOS	B-Operating_System
design	O
and	O
the	O
speed	O
of	O
general	O
tasks	O
within	O
the	O
operating	B-General_Concept
system	I-General_Concept
resulting	O
from	O
the	O
SSD	B-Device
and	O
Sandy	B-Device
Bridge	I-Device
processors	O
.	O
</s>
<s>
The	O
new	O
screens	O
on	O
the	O
ZenBook	B-Device
Prime	I-Device
were	O
highly	O
praised	O
by	O
reviewers	O
when	O
considering	O
brightness	O
,	O
contrast	O
ratio	O
,	O
viewing	O
angle	O
and	O
colour	O
accuracy	O
,	O
the	O
improvements	O
over	O
previous	O
models	O
being	O
put	O
down	O
to	O
the	O
switch	O
from	O
TN	O
to	O
IPS	O
displays	O
.	O
</s>
<s>
The	O
keyboard	O
also	O
garnered	O
praise	O
for	O
the	O
increased	O
backlighting	O
and	O
improved	O
key	O
travel	O
while	O
the	O
Intel	O
Wi-Fi	O
controller	O
was	O
found	O
to	O
perform	O
better	O
than	O
the	O
Qualcomm	O
used	O
in	O
the	O
first	O
generation	O
of	O
Zenbooks	B-Device
.	O
</s>
<s>
The	O
Zenbook	B-Device
Primes	I-Device
still	O
received	O
some	O
criticism	O
:	O
the	O
latest	O
version	O
of	O
the	O
touchpad	B-Application
was	O
acknowledged	O
as	O
an	O
improvement	O
over	O
the	O
original	O
Zenbooks	B-Device
,	O
but	O
still	O
irritating	O
,	O
and	O
the	O
sound	O
quality	O
was	O
found	O
to	O
be	O
worse	O
than	O
that	O
with	O
the	O
first	O
generation	O
.	O
</s>
<s>
Despite	O
these	O
issues	O
,	O
the	O
overall	O
reaction	O
was	O
positive	O
:	O
the	O
UX31A	O
was	O
called	O
"	O
today	O
's	O
best	O
ultrabook	B-Device
"	O
and	O
"	O
the	O
best	O
ultrabook	B-Device
out	O
there	O
"	O
at	O
the	O
time	O
of	O
release	O
.	O
</s>
<s>
The	O
ZenBook	B-Device
UX32VD	O
was	O
well	O
received	O
for	O
similar	O
reasons	O
to	O
the	O
Zenbook	B-Device
Prime	I-Device
.	O
</s>
<s>
The	O
screen	O
,	O
chassis	O
and	O
keyboard	O
again	O
garnered	O
praise	O
although	O
the	O
inclusion	O
of	O
a	O
discrete	B-Device
GPU	I-Device
was	O
noted	O
as	O
a	O
major	O
selling	O
point	O
.	O
</s>
<s>
The	O
hybrid	O
drive	O
attracted	O
criticism	O
for	O
its	O
slow	O
performance	O
and	O
the	O
same	O
touchpad	B-Application
issues	O
that	O
the	O
Zenbook	B-Device
Prime	I-Device
had	O
were	O
still	O
present	O
.	O
</s>
<s>
SLR	O
Lounge	O
criticised	O
the	O
slow	O
hybrid	O
drive	O
and	O
4	O
GB	O
of	O
RAM	O
,	O
but	O
suggested	O
replacing	O
them	O
as	O
the	O
option	O
is	O
available	O
,	O
noting	O
that	O
it	O
was	O
an	O
option	O
not	O
often	O
offered	O
on	O
ultrabooks	B-Device
.	O
</s>
<s>
As	O
a	O
cheaper	O
option	O
the	O
ZenBook	B-Device
UX32A	O
was	O
praised	O
by	O
Chris	O
Martin	O
of	O
PC	O
Advisor	O
for	O
being	O
"	O
a	O
more	O
affordable	O
luxury	O
"	O
,	O
retaining	O
the	O
"	O
premium	O
feel	O
"	O
of	O
the	O
Zenbook	B-Device
range	O
but	O
at	O
a	O
lower	O
price	O
point	O
.	O
</s>
<s>
By	O
contrast	O
,	O
the	O
Sandy	B-Device
Bridge	I-Device
chip	O
,	O
a	O
previous-generation	O
part	O
at	O
the	O
time	O
of	O
sale	O
,	O
was	O
outlined	O
as	O
a	O
detraction	O
as	O
was	O
the	O
lower	O
battery	O
life	O
compared	O
to	O
the	O
UX31E	O
.	O
</s>
<s>
The	O
screen	O
has	O
a	O
matte	O
finish	O
and	O
relatively	O
high	O
brightness	O
which	O
Notebook	B-Device
Check	O
's	O
reviewer	O
,	O
Christian	O
Hepp	O
,	O
found	O
"	O
quite	O
suitable	O
for	O
outdoor	O
use	O
"	O
,	O
noting	O
that	O
it	O
had	O
a	O
good	O
contrast	O
ratio	O
but	O
a	O
narrow	O
range	O
of	O
colours	O
.	O
</s>
<s>
The	O
ZenBook	B-Device
UX42VS	O
and	O
UX52VS	O
drew	O
criticism	O
for	O
its	O
high	O
price	O
and	O
lack	O
of	O
touch	O
screen	O
,	O
but	O
the	O
screen	O
quality	O
,	O
keyboard	O
and	O
system	O
speed	O
were	O
praised	O
.	O
</s>
<s>
The	O
battery	O
life	O
was	O
considered	O
acceptable	O
taking	O
into	O
account	O
the	O
form-factor	O
and	O
the	O
discrete	B-Device
GPU	I-Device
,	O
despite	O
it	O
being	O
significantly	O
shorter	O
than	O
the	O
UX31A	O
.	O
</s>
<s>
AnandTech	O
reviewer	O
Jason	O
Inofuentes	O
found	O
the	O
touch	O
screen	O
to	O
be	O
so	O
superior	O
to	O
the	O
touchpad	B-Application
that	O
he	O
stopped	O
using	O
the	O
touchpad	B-Application
altogether	O
in	O
his	O
trial	O
of	O
a	O
Zenbook	B-Device
Touch	I-Device
at	O
the	O
Asus	O
launch	O
event	O
.	O
</s>
<s>
Chris	O
Griffith	O
of	O
The	O
Australian	O
found	O
that	O
the	O
screen	O
of	O
the	O
UX31A	O
responded	O
well	O
and	O
that	O
the	O
Windows	B-Application
8	I-Application
gestures	O
worked	O
predictably	O
,	O
his	O
only	O
criticism	O
being	O
the	O
high	O
price	O
.	O
</s>
<s>
The	O
ZenBook	B-Device
UX430	O
is	O
commonly	O
reported	O
to	O
suffer	O
from	O
significant	O
coil	O
whine	O
issues	O
.	O
</s>
