User`s manual

2-12
H8DSL-HTi User's Manual
Fan Headers
The H8DSL-HTi has fi ve 3-pin fan
headers. Fan speed is controlled via
Thermal Management with a BIOS
setting. See the table on the right for
pin defi nitions.
Serial Ports
The COM1 serial port is located on
the I.O backplane. COM2 is a header
located near the BIOS chip. See the
table on the right for pin defi nitions.
Note: NC indicates no connection.
Serial Port Pin Defi nitions
(COM1/COM2)
Pin # Defi nition Pin # Defi nition
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 Ground 10 NC
ATX PS/2 Keyboard and
PS/2 Mouse Ports
The ATX PS/2 keyboard and the PS/2
mouse ports are located to the left of
the COM1 port. See the table on the
right for pin defi nitions.
PS/2 Keyboard and Mouse Port
Pin Defi nitions
(KB/Mouse)
Pin # Defi nition Pin # Defi nition
1 Data 4 VCC
2 NC 5 Clock
3Ground 6NC
LAN1/2 (Ethernet Ports)
Two Gigabit Ethernet ports (desig-
nated LAN1 and LAN2) are located
beside the VGA port. These ports
accept RJ45 type cables.
Fan Header
Pin Defi nitions
(FAN1-5)
Pin# Defi nition
1 Ground (Black)
2 +12V/9.5V (Red)
3 Tachometer
Note: Fan speed may controlled by a BIOS
setting to change with system temperature
("Server Mode" setting). As a result, pin 2 may
be either 12V or 9.5V. See page 4-13.