3-Port Serial ATA & 10/100/1000 PCI Combo Card Silicon Image Sil3512ECTU128 chipset / Realtek RTL8169S-32 Chipset Combo card design adds Serial ATA and Gigabit Ethernet interface into your computer Supports two Serial ATA hard disk drives with high-speed data transfer rates up to 150MB/sec Gigabit Ethernet supports up 1000 Mbps and backwards compatible with 10/100 Mbps networks Two (2) SATA controllers (1internal, 1 External) / One (1) 10/100/1000 Ethernet adapter