Dell Precision T3400 (Late 2007) - Manual (Page 85)

System Setup
85
Front USB
(On default)
Enables or disables the front USB ports.
• Off — The USB group is disabled.
• On — The USB group is enabled.
LPT Port Mode
(PS/2 default)
Specifies the mode of operation for the integrated parallel port.
• Off — The port is disabled.
• AT — The port is configured for IBM AT compatibility.
• PS/2 — The port is configured for IBM PS/2 compatibility.
• EPP — The port is configured for Enhanced Parallel Port
protocol.
• ECP — The port is configured for Extended Capability Port
protocol.
LPT Port Address
(378h default)
Specifies the base I/O address for the integrated parallel port.
• 378h
• 278h
• 3BCh
Serial Port #1
(Auto default)
Disables or selects the address for the integrated serial port and
determines how the serial port operates.
• Off — The serial port is disabled.
• Auto — The BIOS selects between COM1 and COM3; if both
resources are in use, the port is disabled.
• COM1 — The port is configured at 3F8h with IRQ 4.
• COM3 — The port is configured at 3E8h with IRQ 4.
PS/2 Mouse Port
(On default)
Enables or disables the integrated PS/2-compatible mouse
controller.
• Off — The PS/2 legacy mouse port is disabled.
• On — The PS/2 legacy mouse port is enabled.