GIGABYTE X79-UD3

PCI Express 3.0 x16: 4 (x16, x16, x8, x8)
For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
The PCIEX8_2 slot shares bandwidth with the PCIEX16_2 slot. When the PCIEX8_2 slot is populated, the PCIEX16_2 slot will operate at up to x8 mode.

SATA RAID: X79 chipset:
2 x SATA 6Gb/s connectors (SATA3 0/1) and 4 x SATA 3Gb/s connectors (SATA2 2/3/4/5) support RAID 0, RAID 1, RAID 5, and RAID 10
* When a RAID set is built across the SATA 6Gb/s and SATA 3Gb/s channels, the system performance of the RAID set may vary depending on the devices being connected.

3 x Marvell 88SE9172 chips:
4 x SATA 6Gb/s connectors (GSATA3 6/7/8/9) and 2 x eSATA 6Gb/s connectors support for RAID 0 and RAID 1

Other Connectors: 1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector
1 x CPU fan header
4 x system fan headers
1 x front panel header
1 x front panel audio header
1 x S/PDIF Out header
1 x serial port header
1 x Clear CMOS jumper
1 x Trusted Platform Module (TPM) header