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U2421E
21
22
23
24
25
26
27
28
29
30
26
| Viลกe
o
monitoru
monitor
scr
een
at
or
be
l
ow ey
e l
evel
mo
nitor a
nd
keyboar
d
positioned
dir
ec
tl
y
in
fron
t
of the user
fee
t
๎
at
on
the
๎
oo
r
wrists r
e
l
axed
and
๎
at
1
...
...
24
25
26
27
28
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