Acer 370LXB User Manual page 7

2.4.3 CPU Fan Connector (3-pin CPUFAN)
Connect the fan's plug to the board taking into consideration the polarity of the connector.
2.4.4 Infrared (IrDA) Connector (5-pin SIR)
This connector supports the optional wireless transmitting and receiving infrared module, with this module and
application software such as Laplink or Win95 Direct Cable Connection, user can transfer files to or from their laptops,
notebooks, PDA, PCs and printers. The connector supports IrDA (115.2Kbps, 2 meters) and ASK-IR (56Kbps). Install
infrared module onto Infrared connector and configure the setting through 'UART Mode Select' in Integrated
Peripherals to select whether UART is directed for use with COM2 or Infrared.
2.4.5 Floppy Disk Drive Connector (34-pin FLOPPY)
This connector supports the provided floppy disk drive ribbon cable. Orient the red stripe to pin 1
2.4.6 Primary/Secondary IDE Connector (Two 40-pin IDE)
These connectors support the provided IDE hard disk ribbon cable. Connect your first IDE hard disk to master mode of
the primary channel. If you have second IDE device to install in your system, connect it as slave mode on the same
channel, and the third and fourth device can be connected on secondary channel as master and slave mode
respectively.