The USB-1SP4T-A18 from Mini Circuits is a general purpose USB controlled SP4T electro mechanical absorptive fail-safe RF switch Martix with a break-before-make configuration. It operates from DC to 18 GHz, provides a typical switching time of 25 msec, an insertion loss of 0.2 dB and a isolation of 85 dB. It requires a voltage supply of 24 V. The RF switch can be operated remotely using the supplied GUI program or programmed by the user using the included API DLL com object. Also included is a 2.7 ft USB cable, a power adapter suitable for US, EU and other power systems. It is housed in a compact 4.5" X 6.0" X 2.25" metal case with 2.1mm, 5 SMA Female connectors. It is used in labs, Test equipment and control systems.