The Power Mac G4 (AGP Graphics) was released in the second half of 1999; it was the first Power Macintosh to include only industry-standard internal and external expansion. For some years afterwards, a number of third parties created dongles that provided backwards compatibility to users of newer Power Mac systems with old hardware. This included companies like Griffin Technology, MacAlly Peripherals, Rose Electronics and many others. In some cases, these companies produced adapters that matched the aesthetic design of the Power Mac.