USB Keyboard with T-Ball Connector Type USB Key Layout Qwerty Number of Keys 63 Overall Depth 3/4 in Overall Height 4 5/8 in Overall Width 14 1/8 in Case Material Polymer Cutout Height 4 1/4 in Cutout Width 13 7/8 in Features Compact Format Resistant To Most Commonly Used Cleaning Agents Includes 2.5 m USB Cable Gasket IP Rating IP54 Key Top Material Polymer Maximum Operating Temperature 158 Degrees F Minimum Operating Temperature -4 Degrees F