Pfeiffer also made several major (and some minor) acquisitions. In 1997, Compaq bought Tandem Computers, known for their NonStop server line. This acquisition instantly gave Compaq a presence in the higher end business computing market. Minor acquisitions centered around building a networking arm and included NetWorth (1998) based in Irving, Texas and Thomas-Conrad (1998) based in Austin, Texas. In 1997 Microcom was also acquired, based in Norwood, MA, which brought a line of modems, Remote Access Servers (RAS) and the popular Carbon Copy software.