Network Boards; Pcmcia Device; Tape Backup Unit - NEC POWERMATE PROFESSIONAL 9000 Service Manual

1-38 Technical Information

NETWORK BOARDS

All systems come with one of several network boards in an expansion slot. Depending on
the type of board and its connectors and capabilities, the system can be connected to
another computer, to a LAN, or to the Internet. The system is connected via an Intel or
3COM network board as follows:
T
thin Ethernet cable and onboard transceiver using a BNC connector (3COM
3C905-TX-W)
T
twisted-pair cable and onboard transceiver supporting 10BASE-T and 10BASE-
TX using an RJ-45 connector (3COM 3C905-TX-W or Intel LAN Pro 100)
T
thicknet cable with an external transceiver using an AUI (DB15) connector
(3COM 3C905TX-W).
Specifications for network boards are given in Table 1-36 and Table 1-37.

PCMCIA DEVICE

Some systems come with a PCMCIA unit (or PC Card Host). The PCMCIA unit provides
twin PC card slots, which support two Type I/II cards, or one Type I/II card and one
Type III. The unit supports ISA Plug and Play, and allows cards of mixed voltage to be
used in the same system. PC cards can provide the system with memory, storage,
fax/modem capabilities, video capabilities, or a serial port interface. The PCMCIA driver
enables full floppy disk or hard disk emulation on flash cards; compatible with all
compression and PC-utilities software.
The unit is comprised of a "SwapBox" housed in a 5 1/4-inch accessible slot, a PCMCIA
ISA adapter card, and a dual cable that connects them on the PCMCIA bus. PCMCIA
device specifications are given in Table 1-38.

TAPE BACKUP UNIT

Some systems come with a tape backup unit. The tape backup unit is a high-capacity, high-
performance data storage device that can compress and write data to and read and
uncompress data from tape. The unit also comes with backup software used to tailor the
backup process so that some or all of the files on the system can be backed up to a tape
cartridge. Files backed up to a tape backup unit are compressed to conserve space and to
speed up the backup process.
The tape backup unit is installed in a 5 1/4-inch accessible slot. The installed tape backup
unit is connected to an IDE cable that connects to the system board. The PCI/IDE channel,
and the master/slave configuration of the unit depend on the specific configuration of the
system. Tape backup unit specifications are given in Table 1-39.