Asus ROG MAXIMUS Z790 HERO LGA 1700 ATX Motherboard - Manual (Page 56)

2-14 Chapter 2: Basic Installation
Chapter 2
For 2242 and 2260 length
A. Remove the plastic film from the thermal pad.
B. Remove the thermal pad of the M.2 length screw hole you wish to install
your M.2 to, then install the bundled M.2 Q-latch.
C. Rotate and adjust the M.2 Q-latch so that the handle points away from the
M.2 slot.
D. (optional) Remove the thermal pad of the 2242 M.2 length screw hole and
install the bundled rubber for M.2 backplate if you are installing a single
sided M.2 storage device. DO NOT install the bundled rubber for M.2
backplate when installing a double-sided M.2 storage device.
Follow this step only if you wish to install a single sided M.2 storage device to type 2260.
Thermal pad M.2 Q-Latch
Thermal pad Bundled rubber for M.2 backplate