MSI MS-6135 User Manual page 21

The mainboard has a 32-bit Enhanced PCI IDE Controller that provides PIO
mode 0~4, Bus Master, and Ultra DMA/33 function. It has two HDD connec-
tors IDE1 (primary) and IDE2 (secondary). You can connect up to four hard
disk drives, CD-ROM, 120MB Floppy and other devices to IDE1 and IDE2.
These connectors support the provided IDE hard disk cable.
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 second hard
drive to Slave mode by setting the jumper accordingly.
IDE2 (Secondary IDE Connector)
IDE2 can also connect a Master and a Slave drive.
Secondary IDE Connector
1
Primary IDE Connector
1
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