Product Description: FireWire 400 to 800 converter adapter is designed to connect your FireWire 400 peripherals to FireWire 800 port equipped host devices Why Us?NECABLES is not only a brand, we have our own factory which has been engineering and manufacturing these cables and adapters for almost 20 yearsSpecifications: Housing Material: PA10T black, flame retardant and durableShell Material: SUS304 T=0.30mmPin Material: Brass, 15 micron gold platedSize: 2.28” x 0.71” x 0.47” Plug n play and hot swappable 2 pcs per bag Attention: Compatible with Mac Pro, MacBook Pro, Mac Mini, iMac and those host devices with FireWire 800 port. If your host device has only tb port, then you will need another adapter in addition: tb to FireWire 800 (Not supplied) Warranty:NECABLES offers 30 Days Money-Back and 12 Months replacement service