Improve productivity by working with multiple monitors.The Matrox quad analog upgrade cable allows users to increase their desktop from two to four monitors on certain Matrox M-Series and P-Series graphics cards.Easy upgrade to four analog monitorsInstallation involves connecting the Matrox quad analog upgrade cable to a compatible Matrox M-Series or P-Series graphics cards and attaching your analog monitor cables to it.Improve productivity by working with four monitorsManage multiple applications and documents across your monitors with ease to get more done.