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:

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

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