No ac adapter. The CKL 2-Port Dual Monitor HDMI KVM Switch is a versatile device that allows you to easily switch between two monitors with HDMI connectivity. It offers a 1:2 connection split, providing convenience and efficiency for your workspace. The switch is powered by USB 2.0 and features a sleek black color design with dimensions of 5.1 inches in length, 2.85 inches in width, and 1.65 inches in height. This KVM switch from CKL is compatible with various devices and is a reliable choice for expanding your desktop setup.