The Microsoft 24GHz Transceiver v70 (Interface 2) is a type of wireless receiver/transceiver typically used in older Microsoft wireless keyboards, mice, or other peripherals. It operates on the 24 GHz frequency, which is part of the 2.4 GHz ISM band, commonly used for wireless communication. The Interface 2 version refers to the type of connection or protocol used for communication between the transceiver and the device, but it might not be a widely recognized term on its own.