描述：Ultraslim Keyboard with Optical Trackball A high-quality compact keyboard with integrated optical trackball. Fit for IT, industrial use, medical facilities and portable systems. Equally suitable for 19-inch racking. Designed for continuous use - more than 20 million operations Use high-quality gold crosspoint contacts (Cherry ML technology) Integrated optical trackball with two mouse buttons Ultra slim - only 20mm high Ideal for space limited and 19" applications Plug and play - no software required ### 紧凑型键盘
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