NEC POWERMATE ES Series, Инструкция по обслуживанию и справочник

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System Overview 1-11
Sample DIMM Memory Upgrade Paths
Total Memory DIMM 1 DIMM 2
64 MB (8 Mbit x 72) 64 MB —
128 MB (16 Mbit x 72) 64 MB 64 MB
128 MB (16 Mbit x 72) 128 MB —
256 MB (32 Mbit x 72) 128 MB 128 MB
256 MB (32 Mbit x 72) 256 MB —
512 MB 256 MB 256 MB
Riser Board
All systems come with a riser board attached to a removable riser board bracket. The riser board
has three PCI connectors for adding up to three optional expansion boards. The riser board plugs
into the riser board connector on the system board.
For further information on the riser board, see Section 4, “System Boards.”
Diskette Drive
A single mobile-type diskette drive is supported in the system. The installed 1.44-MB,
3 1/2-inch diskette drive is connected to the system board by a two-connector ribbon cable. The
cable contains both signal and power lines. There are no switches or jumpers to set.
Diskette drive specifications are given in Section 9, “Specifications.”
Hard Drive
All systems ship with one internal 3 1/2-inch EIDE hard drive installed inside the system, under
the CD-ROM drive. Drives are available in 10-GB or higher Ultra DMA/66 models.
A two-connector Ultra DMA/66 cable connects the hard drive to the primary IDE channel on the
system board. The drive is connected as the master device on the primary channel.
Hard drive jumper settings are given in Section 2, “System Configuration.” The location of the
primary IDE connector on the system board is given in Section 4, “System Boards.” Hard drive
specifications are given in Section 9, “Specifications.”
Power Supply
The 106-watt power supply is mounted inside the system unit. It supplies power to the system
board, option boards, diskette drive, hard drive, CD-ROM drive, DVD-ROM drive (if installed),
keyboard, mouse, and other internal options. A fan inside the power supply provides system
cooling.
Power supply connector locations on the system board are given in Section 4, “System Board.”
Power supply specifications are given in Section 9, “Specifications.”
Keyboard
The Windows enhanced PS/2-compatible keyboard is standard equipment for the system. The
keyboard provides a numeric keypad, separate cursor control keys, 12 function keys, and is
capable of up to 48 functions. Key status lamps on the keyboard include Num (Numeric) Lock,
Caps (Capital) Lock, and Scroll Lock.
The keyboard’s six-pin connector plugs into the back of the system. Keyboard specifications are
given in Section 9, “Specifications.”