<s>
LGA	B-Device
2066	I-Device
,	O
also	O
called	O
Socket	B-Device
R4	I-Device
,	O
is	O
a	O
CPU	B-General_Concept
socket	I-General_Concept
by	O
Intel	O
that	O
debuted	O
with	O
Skylake-X	B-Architecture
and	O
Kaby	B-Device
Lake-X	I-Device
processors	O
in	O
June	O
2017	O
.	O
</s>
<s>
It	O
replaces	O
Intel	O
's	O
LGA	O
2011-3	O
(	O
R3	O
)	O
in	O
the	O
performance	O
,	O
high-end	O
desktop	O
and	O
Workstation	O
platforms	O
(	O
based	O
on	O
the	O
X299	B-Device
"	O
Basin	O
Falls	O
"	O
and	O
C422	O
chipsets	O
)	O
,	O
while	O
LGA	B-Device
3647	I-Device
(	O
Socket	O
P	O
)	O
replaces	O
LGA	O
2011-3	O
(	O
R3	O
)	O
in	O
the	O
server	O
platforms	O
based	O
on	O
Skylake-SP	O
(	O
Xeon	O
"	O
Purley	O
"	O
)	O
.	O
</s>
<s>
All	O
of	O
these	O
CPUs	O
require	O
the	O
Intel	B-Device
X299	I-Device
chipset	O
to	O
work	O
.	O
</s>
<s>
Kaby	B-Device
Lake-X	I-Device
processors	O
were	O
discontinued	O
in	O
May	O
2018	O
.	O
</s>
<s>
Starting	O
October	O
2019	O
,	O
BIOS	B-Operating_System
updates	O
for	O
most	O
of	O
the	O
X299-based	O
motherboards	O
removed	O
support	O
for	O
Kaby	B-Device
Lake-X	I-Device
processors	O
.	O
</s>
<s>
Take	O
note	O
that	O
certain	O
types	O
of	O
Xeon	O
processors	O
will	O
not	O
work	O
on	O
this	O
socket	O
,	O
like	O
Skylake-P	O
.	O
</s>
