NEC NX7700i - Manual (Page 24)

Base Module
855-900549 2-5
2.2.6. Power Bay
The power bay supplies power to the system. A maximum of three DPSs (a DPS is a system
power supply with a fan) can be installed in the power bay.
The expansion power bay is used only when the power is supplied from two systems or
100VAC.
AC SW
Expansion power bay
(c) Power supply from 100VAC (Rear
View)
(b) Power supply from two systems (2N)
[200VAC] (Rear View)
AC SW
Expansion power bay
(a) Power supply from a single system
(N+1) [200VAC] (Rear View)