<s>
DevSlp	B-Device
or	O
DevSleep	B-Device
(	O
sometimes	O
referred	O
to	O
as	O
device	B-Device
sleep	I-Device
or	O
SATA	B-Device
DEVSLP	I-Device
)	O
is	O
a	O
feature	O
in	O
some	O
SATA	O
devices	O
which	O
allows	O
them	O
to	O
go	O
into	O
a	O
low	O
power	O
"	O
device	B-Device
sleep	I-Device
"	O
mode	O
when	O
sent	O
the	O
appropriate	O
signal	O
,	O
which	O
uses	O
one	O
or	O
two	O
orders	O
of	O
magnitude	O
less	O
power	O
than	O
a	O
traditional	O
idle	O
(	O
about	O
5mW	O
,	O
but	O
some	O
drives	O
can	O
get	O
as	O
low	O
as	O
2.5mW	O
)	O
.	O
</s>
<s>
With	O
DevSlp	B-Device
,	O
rarely	O
used	O
3.3V	O
pins	O
of	O
the	O
SATA	O
power	O
plug	O
will	O
be	O
used	O
for	O
the	O
DevSlp	B-Device
signal	O
instead	O
of	O
providing	O
3.3V	O
power	O
.	O
</s>
<s>
Due	O
to	O
the	O
way	O
they	O
work	O
,	O
DevSleep-enabled	O
drives	O
may	O
not	O
be	O
suitable	O
for	O
most	O
desktop	O
PCs	O
and	O
some	O
notebooks	O
with	O
the	O
3.3V	O
voltage	O
present	O
in	O
their	O
SATA	O
power	O
connectors	O
;	O
the	O
presence	O
of	O
3.3V	O
results	O
in	O
DevSleep-enabled	O
drives	O
remaining	O
in	O
DevSlp	B-Device
state	O
.	O
</s>
<s>
An	O
incompatibility	O
between	O
a	O
desktop	O
mainboard	O
and	O
a	O
SATA	O
SSD	O
may	O
be	O
resolved	O
by	O
disabling	O
the	O
DevSleep	B-Device
feature	O
using	O
a	O
power	O
connector	O
adapter	O
that	O
does	O
not	O
pass	O
the	O
+	O
3.3V	O
line	O
.	O
</s>
