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2.4 Expansion Slots (mini-PCIe and M.2 Sockets)
There is 1 mini-PCIe slot and 2 M.2 sockets on this motherboard.
mini-PCIe slot:
MINI_PCIE1 (mini-PCIe slot; full/half size) is used for PCI Express mini
cards.
M.2 sockets:
M.2 (Key M, 2242/2260/2280) supports SATA2 for SSD.
M.2 (Key M, 2260) supports PCIe x1.
M.2 Socket Pin Definition:
M.2 Key-M Socket (M2_KEYM1)
M.2 Socket (M2_VPU1)