当店はPCパーツを販売する専門ショップです。商品到着後 1週間以内に限り、初期不良による返品を受け付けます。CPUとご搭載いただくマザボードの相性についてご不安のある方は、ご落札前に事前に質問にてお問い合わせください。当商品はES品ではなく正規品です。The X99-A II has eight DIMM slots that can support up to 128GB of DDR4 RAM or 16GB per slot with a maximum overclocked frequency of 3333 MHz.It also supports a total of 8 x SATA III 6 Gb/s ports 1 x SATA Express port 1 x M.2 Socket 3 and will also support 1 x U.2 port.Regardless of whether this motherboard is equipped with a 28 or a 40-lane CPU there is support for 3 x PCIe 3.0/2.0 x16 slots 1 x PCIe 2.0 x16 slot and 2 x PCIe 2.0 x1 slots.USB connectivity is achieved using 1 x USB 3.1 Type-C port and 1 x USB 3.1 Type-A port at speeds up to 10 Gb/s as well as 8 x USB 3.0 ports with speeds up to 5 Gb/s.When equipped with a ThunderboltEX 3 add-on card this motherboard will support bi-directional transfer speeds up to 40 Gb/s via its USB Type-C port as well as the daisy-chaining of up to six devices bandwidth for 4K UHD displays running at 60 Hz and USB Power Delivery for high-power charging of up to 36W.