Biostar U8638 U8636 user's manual - Page 19
Hard Disk Connectors: IDE1/IDE2, 7. Floppy Disk Connector: FDD1, 8. 5V/5VSB Selection for KB,
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4-6. Hard Disk Connectors: IDE1/IDE2 This mainboard has a 32-bit Enhanced PCI IDE Controller that provides PIO Mode 0~4, Bus Master, and Ultra DMA / 33, Ultra DMA / 66,Ultra DMA / 100,Ultra DMA / 133 (Optional) functionality. It has two HDD connectors IDE1 (primary) and IDE2 (secondary). • IDE1 (Primary IDE Connector) The first hard drive should always be connected to IDE1. IDE1 can connect a Master and a Slave drive. You must configure the second hard drive on IDE1 to Slave mode by setting the jumper accordingly. • IDE2 (Secondary IDE Connector) The IDE2 controller can also support a Master and a Slave drive. The configuration is similar to IDE1. The second drive on this controller must be set to slave mode. 4-7. Floppy Disk Connector: FDD1 The motherboard provides a standard floppy disk connector (FDC) that supports 360K, 720K, 1.2M, 1.44M and 2.88M floppy disk types. This connector supports the provided floppy drive ribbon cables. 4-8. 5V/5VSB Selection for KB: JKBV1(Optional) JKBV1 1 3 1-2 Closed 1 3 2-3 Closed Assignment 5V 5V SB