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Gigabyte motherboards have got two SATA III 6 Gb/sec ports for the expansion of storage, one PCIe 2.0 x16, one PCIe x1 and one PCI connector for the connection of add-ons. Network functional consists of gigabit controller from Realtek, whereas audio functional is laid upon 7.1-channel HAD Realtek ALC 887 codec.
The differentiation between the two models lies in the set of internal/external interfaces. Hence, the GA-AM1M-S2P comes with two PS/2 ports, one D-Sub port, four USB ports (3.0 + 2.0), one RJ-45, …