User's Manual

Galaxy G1 
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§2.4.4 Multi-function data line
Radio Y-data line: multi-purpose cable is a "Y"-shaped cable used to connect the
base station mainframe (5-pin red jack), transmitting stations (black jack) and
external battery (red and black clip) for power supply and data transmission.
Power Cable
Mainframe multi-function data lines: the role of multi-purpose communications
cable is to connect the receiver to the host computer, for the transmission of
static data and the host firmware upgrade.
Data cable