Asus STRIX X99 Manual page 37

2. M.2 socket 3
This socket allows you to install an M.2 (NGFF) SSD module.
• This socket supports M Key and type 2242/2260/2280/22110 storage devices.
• The M.2 connector shares bandwidth with U.2 connector.
3. U.2 connector (U.2)
This motherboard comes with a U.2 connector which supports PCIe 3.0 x4 NVM
Express storage.
The U.2 connector shares bandwidth with M.2 connector.
ASUS STRIX X99 GAMING
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