The Nec SL2100 3-Port CO Trunk card and expansion mounting board is a high-quality product manufactured by NEC in China. This product is specifically designed for phone switching systems and PBXs, making it ideal for businesses and industrial settings. With a compact package dimension of 10.0x5.98x2.01 inches and a weight of 1.0 pound, this product is easy to install and transport, providing efficient and reliable communication solutions for offices and other professional settings. US Buyers ONLY and I'll pay shipping.