<s>
The	O
Open	B-Device
Systems	I-Device
Adapter	I-Device
(	O
OSA	O
)	O
is	O
a	O
network	O
controller	O
for	O
IBM	B-Device
z/Architecture	I-Device
,	O
ES/9000	B-Device
and	O
S/390	B-Device
mainframes	O
.	O
</s>
<s>
The	O
OSA	O
supports	O
Ethernet	O
,	O
Token	B-Device
Ring	I-Device
and	O
FDDI	B-Protocol
connectivity	O
.	O
</s>
