WikiMHI2/MHI2Q Harman/AisinShell access via telnet and UARTConnecting TTL adapter to UART on quadlockQuadlock pinout for connection to UART of RCC and MMX RCC UART connection: MMX UART connection: Connect to RCC or MMX UART with putty PreviousShell access via telnet and UARTNext TelnetCommunity content mirrored from mibwiki.one. Always make a backup before flashing or coding a unit.