The ASRock Fatal1ty Z97X Killer/3.1 comes with three PCI Express 3.0 x16 slot, and three PCI Express 2.0 x1 slots.

The three PCI Express 3.0 x16 slots work at x16/x0/x0, x8/x8/x0, or x8/x4/x4 configurations, which means the bandwidth of the first slots is shared with the other two.

The motherboard supports CrossFire and SLI with up to three video cards and four GPUs.

There is also an M.2 slot, supporting one SATA-600 or PCI Express 2.0 x2 SSD module.

ASRock Fatal1ty Z97X Killer/3.1Figure 2: slots