Asus ROG STRIX Z490-G GAMING WI-FI User Manual page 24

7. M.2 slot
The M.2 slot allows you to install M.2 SSD modules.
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The M.2 SSD module is purchased separately.
1-12
M.2_1 slot supports PCIe 3.0 x4 mode Key M design and type 2242 / 2260/ 2280 /
22110 storage devices.
M.2_2 slot supports PCIe 3.0 x4 and SATA mode Key M design and type 2242 /
2260 / 2280 storage devices.
M.2 slots supports IRST (Intel Rapid Storage Technology).
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Chapter 1: Product Introduction