Abstract: A wireless communication system includes: a smart device, supporting at least a first wireless communication connection and a second wireless communication connection; a wireless network connecting device, supporting at least the second wireless communication connection; and a controlled device, supporting at least the first wireless communication connection and the second wireless communication connection. The controlled device has input keys whose number is less than a threshold value. After the smart device and the controlled device are paired via the first wireless communication connection, the smart device sends a connection setup related information to the controlled device via the first wireless communication connection. The controlled device is connected to the wireless network connecting device and the second wireless communication connection based on the connection setup related information.

Abstract: A system for file sharing includes a file integration service program and a dongle device. The file integration service program is installed in a first electrical device and provides to-be-shared files accessible by the first electrical device. The dongle device includes a hot-plug port, a microcontroller and a wireless communication module. The hot-plug port is for coupling to a second electrical device. When the hot-plug port is coupled to the second electrical device, the microcontroller disassembles and packages a first instruction with a SCSI standard from the second electrical device into the first instruction with a wireless communication standard. The wireless communication module transmits the first instruction with the wireless communication standard to the first electrical device, so that the second electrical device can access the to-be-shared files via the dongle device.