The European Commission has approved HP's US$2.7 billion takeover of 3Com without attaching conditions.
HP and 3Com both manufacture network hardware. However, there is little overlap in any specific European markets. 3Com's appeal to the IT giant is understood to lie chiefly in its strength in the Chinese market, where it generates more than half of its $1.3 billion annual sales.
"The Commission's investigation confirmed that the merged company would continue to face a number of global and effective competitors giving customers the choice from a range of alternative providers for switches and routers," the Commission said in a statement.
HP has said it expects to close the acquisition by the end of June. The deal was first announced in November.
China's competition regulator, the Ministry of Commerce, or Mofcom, has yet to rule on the takeover. Although the deal poses little threat to competition in China, some expect Mofcom to drag its feet in approving the deal, because in 2008 the US blocked a bid by China's Huawei Technologies for 3Com.
The Huawei deal was blocked because the US didn't want certain 3Com security software falling into the hands of the Chinese.