Acer — тайваньская компания по производству компьютерной техники и электроники. Компания занимает 487 место в Fortune Global 500 (2011 год) Источник: https://ru.wikipedia.org/wiki/Acer

Cisco Systems, Inc. is an American multinational corporation technology company headquartered in San Jose, California, that designs, manufactures and sells networking equipment worldwide. It is the largest networking company in the world. The stock was added to the Dow Jones Industrial Average on June 8, 2009, and is also included in the S&P 500 Index, the Russell 1000 Index, NASDAQ-100 Index and the Russell 1000 Growth Stock Index.

Dell Inc. is an American privately owned multinational computer technology company based in Round Rock, Texas, United States, that develops, sells, repairs, and supports computers and services.

HP Inc. (also known simply as HP and stylized as hp) is an American technology company, created on November 1, 2015 as one of two successors of Hewlett-Packard, the other being Hewlett Packard Enterprise. It develops and provides hardware, such as personal computers and printers. It is the legal successor of the old Hewlett-Packard. The split was structured so that Hewlett-Packard changed its name to HP Inc. and spun off Hewlett Packard Enterprise as a new publicly traded company. HP Inc. retains Hewlett-Packard's stock price history, as well as its NYSE ticker symbol of HPQ (whereas Hewlett Packard Enterprise uses a new ticker, HPE). HP is now focusing on consumers who improve their computers frequently and spend more money on games. They released the gamer-centric Omen line of laptops and desktops targeted at mid-range consumers with an Omen X line to debut later in 2016.

IBM manufactures and markets computer hardware, middleware and software and offers infrastructure, hosting and consulting services in areas ranging from mainframe computers to nanotechnology.