We have a selection of beacons that are powered from USB. However, up until now, very few of them have been controllable via USB.
We now stock the Minew U1 that has a CP2104 USB Serial converter that causes the device to show as a serial COM port device. This allows you to control it from other devices such as PCs, laptops, Linux or Android, as well as from the iOS/Android apps.
Why might you want to do this? Scenarios such as use with digital signage and video walls in shopping malls and stadiums sometimes need the beacon advertising to change in real-time as the display information changes. UART connected beacons allows the beacon advertising to be changed by the host device.