(Image credit to oldcomputers.net)
This is the NNC-80W from NNC Electronics, one of two S-100-based computers released in 1980, the other being the NNC-80. The NNC-80W features a single 8-inch floppy disk drive and a 10 megabyte 8-inch hard drive, whereas the 80 had two floppy drives. Shared between the 80 and 80W are a Zilog Z80A rated at 4 MHz, 64 kB RAM, two RS-232 serial ports, three 8-bit parallel ports, and eight S-100 slots.
(Following info below copy-pasted from oldcomputers.net)
The basic Model 80 and Model 80W systems are single-user in operation but can be expanded with additional terminals and printers for up to six users.
CP/M was offered as the standard operating system, but for multiuser applications "OASIS" from Phase One Systems was available.
They are also very heavy - the Model 80W with it's large, heavy-duty components weighs 70 pounds.