SCSI: HDI-30
Serial Ports: 1
Sound Output: stereo 16 bit.
ADB: 1
Ethernet: AAUI-15
Machine Gestalt ID: 126
PRAM Battery: service center replacement only

Minutiae:

NO LONGER AVAILABLE.  The 117 MHz NUpowr PowerPC upgrade has been replaced by a 183 MHz version.

The NUpowr card uses approximately the same amount of power as the 68040 card it replaces.

The three versions of NUpowr differ only in the amount of soldered on RAM.  The 0K version can be used by users who have at least 16MB or larger memory modules.  The 4MB version can be used by users with at least 8MB or larger memory modules.  The 8MB version can be used by users with any size memory modules.

NUpowr works with existing PowerBook 500 memory modules if the memory modules were designed correctly.

Has 4 MB ROM