HDS2T and its family members. As regular Panbo readers are aware the Lowrance HDS series shares a very high commonality with the other Navico chart Thanks Ben! I downloaded the new update from simrad on a SD card and followed the upgrade instructions from lowrance website but the lowrance...Lowrance HDS-7 Gen2 Touch Insight USA with StructureScan HD Bundle: Lowrance HDS-7 Gen2 Touch Insight USA with 50 200 kHz Transducer: Lowrance HDS-7 Gen2 Touch Insight USA with 83 200 kHz Transducer: Lowrance HDS-7 Gen2 Touch Insight USA without Transducer: Lowrance HDS-7m Gen2 Touch Chartplotter Lowrance's HDS-9 Gen3 Sonar/GPS Combo features the most advanced fish-finder technology in one convenient package. Built-in CHIRP Sonar and StructureScan® HD sonar imaging combine for the best possible view of fish and structure both below and to the sides of your boat. Two micro-SD card slots.