Installing the N2310 wasn't difficult, but it's worth having a look at the (meagre) instructions or the following paragraphs. First you need to go to install.thecus.com for the software, or you can install it from the included CD-ROM. The NAS manager is called the Intelligent NAS software. It takes a little while before the software finds the NAS, so exercise a little patience or even let it search a couple times for the network disk.
During the installation process the NAS automatically configures the disks and an account is created so you can access the NAS via Dynamisch DNS / DDNS. The steps all makes sense, but aren't always entirely fleshed out. For example, you receive a mail from sender 'ddns' and have to click a verification link, after which you're taken to a blank screen with the words 'Verify successfully'. That means your DDNS installation was successful.