Gigabyte GA-Z97-HD3 V2.1 Motherboard Introduction. GIGABYTE UEFI DualBIOS™. If drivers are available from the vendors, we will update them on the GIGABYTE website. GIGABYTE LAN Optimizer. 6 x USB 3.0/2.0 ports (4 ports on the back panel, 2 ports available through the internal USB header).
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