How to upload files in Mac

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX2
1

Hello,

Situation: EX2 at home, Mac in office
May I know that how to upload datas to EX2 in this case. I only know the way is mycloud.com.
But this way is not so convenience. Can I have any other way to connect my EX2?
If so, could you please advise the link of the guide?
Many thanks in advance for any help!

Best regards
Jordan