Sorry, for late reply.
Ah! that is easy! Here is what you do.
Make sure both Ethernet port are Gigabit, otherwise you need cross-over cat5.
Connect NAS directly to your system
Set IP manually to:
192.168.1.xxx (your system)
where xxx can be 001~255
Enable NAS Samba service
Enter \\192.168.1.xxx (NAS address)
Now you can access your NAS w/o hub or switches.