The Northgate Mechanical Switch KBDs are wider than the VT-100 KBD standards by the two vertical rows of extra function keys on the left hand side.

Most of the 101-103 KBDs have the cursor and pagenav keys between the KBD & NumPad. The Northgate had the full 15 key arrangement of some of the later Mini-Computer Workstations . . . CAD seats etc.

My favorite was the Mac 101, which was based on the later VT-100 standard variations, it had the added Command Key, ADB interface and Mac Coloration.

It finally died. :'(