Step 3: Inserting A Memory Card - Sony A7RIII ILCE-7RM3A Operating Instructions Manual

To charge the battery pack while it is inserted in the
camera
Turn the camera off and connect it to a device such as a computer using
the USB cable.
If you turn on the camera, power will be supplied from the computer
or the device that you connected, and you will be able to operate the
camera. However, the battery pack will not charge.
Use the USB Type-C cable (supplied) or a USB-standard cable.
To remove the battery pack
Make sure that the access lamp
(page 13) is not lit, and turn off
the camera. Then, slide the lock lever
and remove the battery pack. Be
careful not to drop the battery pack.

Step 3: Inserting a memory card

For details on memory cards that can be used with this camera, refer to
page 82.
1
Open the memory card cover.
GB
26
Lock lever