MSI G52-M6570XA-G22 - Manual (Page 38)

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MS-6570 ATX Mainboard
Hard Disk Connectors: IDE1 & IDE2
The mainboard has a 32-bit Enhanced PCI IDE and Ultra DMA 33/66/
100/133 controller that provides PIO mode 0~4, Bus Master, and Ultra DMA
33/66/100/133 function. You can connect up to four hard disk drives, CD-
ROM, 120MB Floppy (reserved for future BIOS) and other devices.
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.
MSI Reminds You...
If you install two hard disks on cable, you must configure the
second drive to Slave mode by setting its jumper. Refer to the
hard disk documentation supplied by hard disk vendors for
jumper setting instructions.
IDE2
IDE1