Can I just plug in a USB ethernet or wireless adaptor?
No. USB is designed to have two types of devices – a host (like a PC or Mac) can talk to and control other devices, while those other devices can’t talk to each other. USB network adaptors are designed to plug into computers, while the USB connector on the Toppy is the same sort as you’d find on a printer, or an external disk drive – in other words, it simply doesn’t provide the functions necessary to link to anything like a network adaptor, whether wireless or wired.