Firewire IEEE 1394 6 Pin Male to USB 2.0 A Male Adaptor Convertor Connector 5055527562673 | 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
1394-6PF4PF - FireWire 6-pin Female to 4-pin Female Adapter