2.4G Wireless Connection The TECKNET wireless keyboard adopts 2.4G wireless technology, providing a stable connection up to 10m (33 ft). Note: The USB is in the battery compartment of the keyboard, you can find it when open the keyboard battery cover. Comfortable Palm RestThis ergonomically designed usb wireless keyboard comes with 8° foldable and comfortable palm rest and folding holder that can keep it at an optimum slopeprevent your wrists from hurting while long sessions of typing. Keyboard is also designed with anti-slide pads so it can stay in place when you're typing quickly. 90% Noise Reduction The wrist rest for keyboards keys are made of PET film material, reducing noise by up to 90% (almost silent), for a quiet and comfortable typing environment. Smart Power Saving FunctionThis wireless keyboard for laptop has auto-enter power saving function. When you stop using the keyboard more than 30 minutes, it will enter sleep mode respectively to save power. This f