The Lenovo 2764, also known as the Thinkpad T400, is a powerful notebook computer. It can be equipped with up to 4 GB of DDR3 RAM, and can carry an Intel Core 2 Duo processor at speeds as high as 2.93 GHz. Graphics options include both an on-board Intel processor as well as a discrete AMD M82XT processor with 256 MB of RAM. With that processor, the T400 can generate resolutions as high as 2048x1536 on an external monitor.
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Identify why you need an HDMI connection from your computer. Because the 2764 does not have an HDMI port, you will need to obtain some sort of adaptor to connect to an HDMI device. There are a number of different ways to achieve that connection.
Purchase an external USB video card with an HDMI output. These devices have a number of benefits, including the ability to display a different image on the HDMI output than that which is being displayed on the screen. One example of these devices is the Sabrent USB-2011 which can display a 1080p HD signal over its HDMI connector. Other devices will also include support for audio and send it along the HDMI wire with the video signal.
Use a DVI-to-HDMI adaptor if you have a Lenovo ThinkPad USB port Replicator with Digital Video. This device takes the computer's existing video card and displays its signal over DVI. DVI-to-HDMI adaptors are both affordable and easy to obtain.
Convert the computer's VGA output directly to HDMI. Because VGA is an analogue signal and HDMI digital, doing this requires a special piece of hardware such as the StarTech VGA to HDMI converter with audio. Simple VGA to HDMI cables will not work, due to the lack of digital output from the T400's VGA port.
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