The Genuine Apple USB-A keyboard extension cable (part number 591-0240) is a white, round cable designed specifically for Apple products. It is a 1:1 extension cable with a USB standard type A female connector on one end and a USB connector on the other. This cable is compatible with the Apple 591-0240 model and has an output voltage of 3V. Made in China, this extension cable is a reliable and high-quality accessory for connecting your Apple devices.