Turn the NeXTStation around, and remove this screw:

Then, lift the top cover of the computer. This will reveal the guts.

The ports from left to right: SCSI2, Keyboard & Mouse, DSP Port, DB-19(MegaPixel Display), DB-9(Serial), RJ-45(Ethernet), Coaxial (10b2 Ethernet), Power

I find notes in everything!