52Can I use my USB memory stick (or mouse, keyboard, cell phoneor other USB device) with my unit? Connecting peripheraldevices via USB requires the USB I/O Boot. Many USB devicesmay work. Check with the device manufacturer to see if the deviceis supported under Windows Mobile. Special drivers may need tobe installed.Caring for your UnitCase vent hole: A Gore-Tex membraneis used at the vent hole to equalize theatmospheric pressure within the unit andto prevent dust, water, etc. from entering.The vent must remain clear of any obstruction. Damage to thetouchscreen will occur if the vent is covered. Covering the vent withstickers and labels may void the warranty.Cleaning the unit: Use a soft, dampened cloth with either water ora diluted mild detergent. If a mild detergent is used, ensure all soapresidue is removed. Do not use any chemical cleaners and do notput the unit in the dishwasher.Care of the touchscreen: Use only the included stylus or otherdevices specifically designed for use with touchscreens. DO NOTuse the metal screwdriver end of the stylus on the touchscreen or itwill scratch your screen. Only use the spring-tip end of the stylus.The use of ballpoint pens, nails or other sharp objects to operate thetouchscreen will scratch and/or damage the unit. Keep thetouchscreen clean by gently wiping the display, using a soft,dampened cloth with either clean water or glass cleaner.Do not use abrasive cleaners directly on the display. Doing so mayvoid your warranty. Use the screen protectors included with the unitto keep the touchscreen clean and protected, following theinstructions provided on the screen protector package.Mechanical shock: The unit is designed to resist damage for dropsup to 4 ft (1.22 meters). However, you should protect the displayfrom impact, pressure, or abrasive substances that can scratch it orcrack it. The unit should not be dropped unnecessarily.Venthole