Classic Straight USB Cable suitable for the Garmin StreetPilot C550 with Power Hot Sync and Charge Capabilities - Uses Gomadic TipExchange Technology - Walmart.com
Garmin StreetPilot C550 GPS + 2020 USA/CAN/MEX UK RI Australia New Zealand Maps | eBay
TRAMsoft - Options for GARMIN StreetPilot c320/c330s/c510/c550 (english)