<s>
The	O
Surface	B-Device
Laptop	I-Device
4	I-Device
is	O
a	O
laptop	B-Device
computer	I-Device
made	O
by	O
Microsoft	O
.	O
</s>
<s>
It	O
is	O
the	O
fourth	O
generation	O
of	O
Surface	B-Device
Laptop	I-Device
which	O
launched	O
on	O
13	O
April	O
2021	O
.	O
</s>
<s>
It	O
succeeds	O
the	O
Surface	B-Device
Laptop	I-Device
3	I-Device
,	O
which	O
was	O
released	O
in	O
2019	O
.	O
</s>
<s>
Surface	B-Device
Laptop	I-Device
4	I-Device
keeps	O
the	O
same	O
form	O
design	O
and	O
ports	O
as	O
its	O
predecessor	O
.	O
</s>
<s>
Both	O
models	O
have	O
the	O
same	O
3:2	O
aspect	B-Device
ratio	I-Device
and	O
201	O
ppi	B-Algorithm
.	O
</s>
