Keyboard is a standard input device which is used to feed data into the computer and to control its operation. A keyboard can either be internal or external. Internal keyboards are for notebooks only, while External keyboards can be used with notebooks, desktops, and servers. External keyboards are available with either PS2 or USB interface connections. The number of keys in a keyboard determines the total characters and operations that can be carried out. The interface type determines the compatibility of the keyboard with your system. Some of the keyboards are wireless. Keyboards can also come in different languages (For e.g. Latin/Latin America, United States) with the corresponding Language character Keys. Please note that some of our replacement products are provided as kits or assemblies. These kits may contain additional parts required for installation. In case a product is not sold as a kit or assembly, it may require complementary parts for ease of installation. Refurbished Spare Parts are parts retrieved from Dell-branded systems that have been returned, some of which have never been used. All Dell refurbished spare parts are certified to comply with all original Dell factory performance specifications and come with a 90-day limited hardware warranty. Dell’s limited hardware warranty covers defects in materials and workmanship in your Dell-branded hardware products. For additional details on our warranty services, please visit www.dell.com/warranty .