Tascam HS-4000 Owner's Manual page 13

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4 1 ETHERNET connector
Use this Ethernet connector to connect with a network for
file transfer and to control this unit from an external source.
(This is planned to be made functional in a future firmware
version update.)
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4 2 GROUND terminal
When using a TASCAM RC-HS32PD remote control (sold
separately), depending on the operating environment, the
color display might flicker or noise might be heard when
monitoring. If this occurs, use the GROUND terminal.
(Please prepare a wire to use with the GROUND terminal.)
2 − Names and functions of parts
TASCAM HS-4000
13