The FBI has opened a criminal investigation into ZTE Corp's sale of banned U.S. computer equipment to Iran, a website reported, as the Chinese telecoms gear maker warned its first half net profit could fall as much as 80 percent. The federal investigations stem from a Reuters report in March that Shenzhen-based ZTE sold Iran's largest telecoms firm a powerful surveillance system capable of monitoring landline, mobile and Internet communications…ZTE spokesman David Shu said the company had no immediate comment. [also refers to Microsoft, HP, Oracle, Cisco, Dell, Nokia Siemens Networks]