Siemens SIMATIC HMI IPC677C Operating Instructions Manual page 136

Service and maintenance
11.7 Expansion and parameter assignment
Installing the additional Compact Flash card
How to install the Compact Flash card in the Compact Flash adapter
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Remove the hard disk cover.
Lift out the Compact Flash adapter
module and lay it on the device.
①
Remove the screws and remove
the CompactFlash latch.
SIMATIC HMI IPC677C
Operating Instructions, 04/2013, A5E02722710-04