US technology company DisplayLink has closed a $15m Series D funding round, led by incoming investor Cipio Partners and co-led by existing investor DFJ Esprit.

Previous investors Atlas Venture, Balderton Capital and DAG Ventures also contributed to the round.

The Palo Alto-headquartered company develops integrated circuits and software that connect monitors to laptops and PCs using standard interfaces such as USB, WiFi and Ethernet, either directly or via docking stations, adapters, and local area networks. It counts Acer, HP, Kensington, Lenovo, LG, Targus and Toshiba as customers.

Dr. Maximilian Schroeck, managing partner at Cipio Partners, said, “We were attracted to the clear technology lead that DisplayLink has created, the market traction already demonstrated with multiple manufacturers, and the considerable end-user enthusiasm for its products. We expect the recent move to support SuperSpeed USB and multiple HD monitors will further grow the addressable market for its technology, and as such we welcomed the opportunity to invest in the company’s next stage of growth.”

In January 2011, Cipio closed its latest fund on €137m, below its original target of €200m.