About BELIN  BELIN,founded in 2010, has its own R&D team, production team and sales team and has always been quality-oriented in order to ensure 100% customer satisfaction. Each product has to pass strict quality inspection before sending out. The compact design of this BELIN adapter converter makes it easy for being prepared for any meeting, presentation, or event with the full confidence that you have the right connections. SeriesProduct Specification: Input:Mini DisplayPort 1.1a,v1.2, Thunderbolt1/2 (Not compatible with Thunderbolt 3 (USB-C) ports ) Output:HDMI and DVI port 4Kx2K@30Hz Female, Compliant to HDMI 1.4a specification up to 3.0Gbps              VGA:1920x1080@60Hz Female, effectively working with all types of legacy monitors, projectors, and TVs。 Our Advantages - This adapter is built with the market top chipmaker PARADE and ANALOGIX chips, compatible with Mini DP, Thunderbolt1/2 (Not compatible with Thunderbolt 3 (USB-C) ports ) - The cable uses multi-layer shielding, the international large version chip manufacturer cooperates, four layer PCB design, better reduces the external electromagnetic interference and guarantees the product to be more durable. - This 3 in 1 mini DP Adapter can replace three others, that saves your cost and space. This compact converter is an ideal solution for use in many work spaces that may utilize assorted displays with varying inputs in multiple rooms. Important Notes ➤The refresh frequency (23-60hz) and resolution may need to be adjusted according to the actual situation due to some compatibility problems between input and output cable used for connection.  ➤You can only use one interface at a time, not both.