Asus 90SF00L1-M00330 User Manual page 76

7. VGA connector (16-1 pin VGA_HDR1)
This connector supports the VGA High Dynamic-Range interface.
8. U.2 connectors (U.2_1; U.2_2; U.2_3; U.2_4)
This motherboard comes with U.2 connectors which support PCIe 3.0 x4 NVM Express
storage.
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Chapter 3: Motherboard Information