Firewire to USB Adapters and Converters - Newegg.com
USB 3.0 SATA HDD Dock (USB + FireWire 400/800)
2 Ports FireWire Hub
Cable USB MALE To Firewire Plug To Mini 4-Pin To Firewire Adaptor for Peripheral Devices That Are Compatible Only with This TYPE of Adaptor - Walmart.com
OWC Mercury Elite Pro FireWire 800 & USB... at MacSales.com
Rocstor LANCER LX Ruggedized USB 3.0/FireWire 800 Mobile Drives, (DISCONTINUED)
Firewire 800 vs USB 3.0 - Which is Faster? - Terry White's Tech Blog
Amazon.com: chenyang CY USB Male to Firewire IEEE 1394 4Pin Male iLink Adapter Cord Cable for DCR-TRV75E DV 1m USB Firewire Cable : Electronics
Oyen Digital: MiniPro 2.5-inch FireWire 800, USB 3.0 External Hard Drive Enclosure (Recertified)