There are several ways to transfer files from/to your PC to N8x0:

1. USB cable: just boot the N8x0 and connect the USB cable. The PC will see the DOS partitions on the SD(s).
2. Move what you want the N8x0 see on your PC into the shared folder.
Note that the PC and th N8x0 have to be on the same (wifi) LAN. After you boot the N8x0; it will see the PC shared folder. If it doesn't see the folder; just simply close the File Mgr and re-open it! I found it very reliable. At first I was frustrated why it kelp vanishing on me too.
3. Orb
4. ....

1. is the fastest way ! I use it to back up the OS image to PC.