Casio HK1223 - Manual (Page 98)

5-8 Setup Configuration Utility (SCU)
COM Ports
Allows you to configure the COM ports of the computer.
COM1 / 2 (FIR) / 3 / 5 / 6 Settings sets the I/O (Input/Output)
address and the Interrupt ReQuest line (IRQ) settings of the COM
ports. The options are Disabled; COM1, 3F8, IRQ4; COM2, 2F8,
IRQ3; COM3, 3E8, IRQ6; COM5, 3E0, IRQ5; COM6, 2E0, IRQ10.
HDD Heater
Sets if the system automatically turns on the built-in hard disk drive
heater for low temperature operation. A check mark (
√) indicates
enabled, while underline (_) indicates disabled.
NOTES:
To use the HDD heater feature, the MTCCTRL driver supplied with your computer
must be installed (see chapter 6 for details).
Disable this item to conserve energy when using battery power.