I had an advice from @linuxdev. I make a new topic and share my difficulty.
When I tried to use Headless mode and connected with Jetson Nano 2GB in using USB-cable and Windows Power Shell, ‘ssh @192.168.55.1 connection timed out’ happened very often.
When I checked IPv4 in Jetson Nano, the number of it is different from the one in the guide.
Dell inspiron 3501
Window10 Home 64bit
no Ethernet Cable
on Device-Manager, the other device: CDC NCM (this is Jetson Nano 2GB, I think)
PC port: USB type-A
Jetson Nano: USB type-B
USB cable: 1.2m USB 2.0
Jetpack 4.6 installed in Jetson Nano 2GB Developer kit
IPv4 in the guide: 192.168.55.1
IPv4 in Jetson Nano (in which Jetpack 4.6 installed) : 192.168.0.21
in Window’s Powershell I filled the following number:
So I can make it, and the connection is stable.
Also, I can use the same IPv4 number in entering Jupyter Notebook.