HARDROCK-50 Rear Panel Kit

Only for Rev F or Rev G amps ie. with S/N 1400 and aboveHobbyPCB has redesigned the Hardrock-50 rear panel PCB. The new version is form, fit and functionally compatible with the previous versions but has the following enhancements:1. Genuine FTDI chip for no-driver-needed install with every version of Windows since XP2. Opto-isolators on the USB lines to prevent ground loops with SDR's3. 5V output on pin 1 protected with a resettable fuse to power transceiver dongalsCurrent Hardrock-50 owners should consider upgrading the rear panel board in their amplifiers if:1. You use the amp with the Flex-1500, Softrock, Peaberry/Omnia or other SDR transceivers that use USB control for automatic band switching. The new rear panel will eliminate ground loops providing significant reduction in noise2. You've had difficulty installing or using the Microchip USB drivers3. You plan to use the HR50-RS-HFIQ, Elecraft or ELAD dongles and need 5V on pin 1 for power.