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Chapter 2. System board features
Network connection
Some PC 300GL models are equipped with an Ethernet adapter that supports the Wake on LAN feature.
Features of the optional Ethernet adapter are:
Operates in shared 10BASE-T or 100BASE-TX environment
Transmits and receives data at 10 Mbps or 100 Mbps
RJ-45 connector for LAN attachment
Operates in symmetrical multiprocessing (SMP) environments
Wake on LAN support
Remote Program Load (RPL) and Dynamic Host Configuration Protocol (DHCP) support
Features of the optional token ring adapter are:
Transmits and receives data at 4 Mbps or 16 Mbps
RJ-45 and D-shell connectors for LAN attachment
Wake on LAN support
Remote Program Load (RPL) and Dynamic Host Configuration Protocol (DHCP) support
Real-time clock and CMOS
The real-time clock is a low-power clock that provides a time-of-day clock and a calendar. The clock
settings are maintained by an external battery source of 3 V DC.
The system uses 242 bytes of memory to store complementary metal-oxide semiconductor (CMOS)
memory. Moving a jumper on the system board erases CMOS memory.
To locate the battery, see “System board, types 6268, 6278, and 6288” on page 13.
Flash EEPROM
The system board uses a 2 MB flash electrically erasable, programmable, read-only memory (EEPROM)
to store the basic input/output system (BIOS), video BIOS, IBM logo, Configuration/Setup Utility, and Plug
and Play data.
If necessary, the EEPROM can be easily updated using a stand-alone utility program that is available on a
3.5-inch diskette.
Expansion adapters
Each PCI-expansion connector is a 32–bit slot. PCI-expansion connectors support the 32–bit 5 V DC,
local-bus signalling environment that is defined in
PCI Local Bus Specification 2.2
.
The PC 300GL has four PCI slots to support the addition of adapters. For information on installing
adapters, see
PC 300GL User Guide
. For information on the connector pin assignments, see “PCI
connectors” on page 29.
12 Technical Information Manual