A wireless universal-serial-bus device that performs a communication conforming to a wireless universal-serial-bus standard with a plurality of wireless universal-serial-bus hosts (1, 2, 3, 4), the wireless universal-serial-bus device comprising: a reception-time-information receiving unit (32, 33, 54) that receives reception time information indicating a data reception time specified by each of the wireless universal- serial-bus hosts (1, 2, 3, 4); a configuration determining unit that determines, when the reception-time-information receiving unit (32, 33, 54) receives the reception time information from a wireless universal- serial-bus host (1, 2, 3, 4), whether a configuration is set for the wireless universal-serial-bus (1, 2, 3, 4) host that transmitted the reception time information; a configuration unit that sets, when the configuration determining unit determines that the configuration is not set for the wireless universal-serial-bus host (1, 2, 3, 4) that transmitted the reception time information, the configuration for the wireless universal-serial-bus host (1, 2, 3, 4) that transmitted the reception time information; a data receiving unit that receives data from each of the wireless universal-serial-bus hosts (1, 2, 3, 4); and a host standby unit that causes, when the reception- time-information receiving unit (32, 33, 54) receives the reception time information from a first wireless universal-serial-bus host (1, 2, 3, 4) while the data receiving unit receives data from a second wireless universal-serial-bus host (1, 2, 3, 4), the first wireless universal-serial-bus host (1, 2, 3, 4) to standby until the data receiving unit completes receiving the data from the second wireless universal-serial-bus host (1, 2, 3, 4). a reception-time-information receiving unit (32, 33, 54) that receives reception time information indicating a data reception time specified by each of the wireless universal- serial-bus hosts (1, 2, 3, 4); a configuration determining unit that determines, when the reception-time-information receiving unit (32, 33, 54) receives the reception time information from a wireless universal- serial-bus host (1, 2, 3, 4), whether a configuration is set for the wireless universal-serial-bus (1, 2, 3, 4) host that transmitted the reception time information; a configuration unit that sets, when the configuration determining unit determines that the configuration is not set for the wireless universal-serial-bus host (1, 2, 3, 4) that transmitted the reception time information, the configuration for the wireless universal-serial-bus host (1, 2, 3, 4) that transmitted the reception time information; a data receiving unit that receives data from each of the wireless universal-serial-bus hosts (1, 2, 3, 4); and a host standby unit that causes, when the reception- time-information receiving unit (32, 33, 54) receives the reception time information from a first wireless universal-serial-bus host (1, 2, 3, 4) while the data receiving unit receives data from a second wireless universal-serial-bus host (1, 2, 3, 4), the first wireless universal-serial-bus host (1, 2, 3, 4) to standby until the data receiving unit completes receiving the data from the second wireless universal-serial-bus host (1, 2, 3, 4).