SouthTech Systems manufactures a Mil-Spec VXI Mainframe that is in contract to the USN Submarine Fleet as well as other international customers. The STS 1881A is a rugged 11 slot C-Size VXI mainframe from the STS family of VXI products, and is used in COTS applications and various military programs. It is designed and manufactured to Mil Standard specifications, ensuring exceptional levels of ruggedness and EMI/RFI shielding. The power supply in the STS 1881A rugged VXI mainframe delivers 2000 Watts of usable power. The STS 1881A is built to protect VXI equipment in the most demanding environments.