I mainly used it on a PC, and there were no problems. Regarding the keypad, I have confirmed that all keys are working. [Product Condition] ・Operation confirmed ・Keypad maintenance completed ・Simple cleaning completed ・All accessories are shown in the photos. [Important Notes] ・Please judge the condition of the product by looking at the photos, as it is a used item. ・Please refrain from purchasing if you are looking for a perfect product. ・It will be wrapped in bubble wrap and shipped. Please check the photos for the shipping condition.