Dell Latitude 3540 Keyguard ADAPTIVE KEYGUARD PROLOQUO PROLOQUO2GO It should fit the T490

It should fit the T490 and T495

It has a matte black finish and is about 1/4" thick

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This keyguard fits the HP USB Slim keyboard

Dell Latitude 3540 Keyguard ADAPTIVE KEYGUARD PROLOQUO PROLOQUO2GO It should fit the T490Keyguard for Dell Latitude 3540 laptop. May also fit other Dell Latitude and possibly some Inspiron laptops that use the same keyboard. Call if you're unsure. The default material is 3 16" clear acrylic. 1 8" high impact PMMA is available for users who require the openings to be shallower, but is not recommended, since it is more flexible and may become warped or dislodged. There are also a number of 1 4" thick materials available. No attachment