JoyliveStore Conect-Pro Firewire 400 to 800 Adapter - 6 pin to 9 pin Connector The 6-pin FireWire-400 to 9-pin FireWire-800 Adapter from Pearstone allows you to plug a 6-pin FireWire-400 device into a 9-pin FireWire-800 port. This adapter provides a great option for connecting a FireWire-400 peripheral like an external hard drive, video card, audio interface, printer, scanner, DV camcorder and more to an available FireWire-800 port.