<s>
The	O
Springboard	B-Application
expansion	I-Application
slot	I-Application
is	O
an	O
expansion	B-Device
port	I-Device
for	O
the	O
Handspring	O
brand	O
of	O
personal	B-Application
digital	I-Application
assistants	I-Application
(	O
PDAs	B-Application
)	O
that	O
ran	O
Palm	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
This	O
socket	O
accepted	O
many	O
different	O
modules	O
with	O
varying	O
functionality	O
including	O
cell	O
phone	O
telecommunications	O
,	O
Wi-Fi	O
connectivity	O
,	O
MP3	O
player	O
hardware	O
,	O
Global	O
Positioning	O
System	O
reception	O
,	O
a	O
digital	B-Device
camera	I-Device
,	O
external	B-Device
storage	I-Device
,	O
and	O
software	O
otherwise	O
too	O
large	O
to	O
fit	O
into	O
the	O
PDA	B-Application
's	O
internal	O
memory	O
.	O
</s>
