Amazon.com: Micro Connectors, Inc. 6 feet Firewire IEEE 1394 6 Pin to 4 Pin Cable (E07-216) : Everything Else
FireWire (IEEE 1394a) 6-Pin to 6-Pin Cable - Micro Connectors, Inc.
FireWire (IEEE 1394) 6-Pin Male to 4-Pin Female Adapter - Micro Connectors, Inc.
Firewire 1394B 800 to 400 Adapter Cable 9-Pin to 4-Pin Plug Connector Lead Cord | eBay
Ieee1394 Adapter Ieee 1394 4pin Male To 6pin Female Firewire Connector Adapter Ieee-1394a Male To Female 4-pin To 6-pin - Plug & Connectors - AliExpress
6ft IEEE 1394a FireWire 400 4-pin to 4-pin, Black | FireWire Cable
1394-4PF6PF-F - Flexible FireWire 4-pin Female to 6-pin Female Adapter