Power Supply; Diskette Drive; Hard Disk Drive - NEC POWERMATE V Service Manual

1-18 Technical Information
The IrDA port permits transfer of files to or from portable devices such as laptops and
personal digital assistant (PDA) products using the pre-installed Puma TranXit applications
software or other software supporting IrDA data transfer. The port supports data transfers
at 115 Kbps from a distance of 1 meter (3 feet 3 inches).
The IrDA port uses the system's COM2 serial port to transfer data. The port shares
registers and function logic with COM2.

POWER SUPPLY

The power supply is mounted inside the system unit. It supplies power to the system board,
option boards, diskette drives, hard disks, keyboard, and mouse. A fan inside the power
supply provides system ventilation. The desktop power supply supplies 145 watts of power.
The minitower power supply provides 200 watts. Connector locations are in Appendix A.

DISKETTE DRIVE

Up to two diskette drives are supported in the desktop and minitower systems. The installed
3 1/2-inch diskette drive is connected by a single ribbon cable with two drive connectors.
The diskette drive cable plugs directly into the system board. Typically both diskette drives
are terminated. Connector locations are given in Appendix A.

HARD DISK DRIVE

Up to two IDE hard drives are supported in the desktop system and up to four IDE hard
drives in the minitower system. The system board has two IDE/PCI interface connectors
(primary and secondary) for connecting various storage devices such as hard disk drives.
Each connector supports up to two IDE devices.
Desktop hard disk systems ship with one internal 3 1/2-inch hard disk drive (1-inch high,
thin-height) installed behind the front panel. The drive cable plugs into the primary (fast)
connector on the system board.
Minitower hard disk systems ship with one internal 3 1/2-inch hard disk (1-inch high, thin-
height) installed behind the front panel, at the bottom of the chassis. The three-connector
drive cable plugs into the primary (fast) connector on the system board. An optional second
hard drive can be connected to the cable. Adding a third hard drive to the internal bay
requires an optional two-drive connector cable (NEC part number 158-050383-004). The
optional cable plugs into the secondary connector on the system board. If adding a fourth
hard drive (in a 5 1/4-inch accessible slot), it connects to the unused connector on the
optional cable.