Datavideo SE-4000 8-Channel 4K Video Switcher - Manual (Page 92)

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Network Mask: Tap to open a numeric keypad then manually enter the network mask if DHCP
is turned off.
On the numeric keypad, select Cancel to close the keypad without saving the changes made
and OK to save the IP address entered.
Network Def: resets network settings to factory defaults. Default settings are listed below.

DHCP: Off

IP Address: 192.168.100.101 (SE-4000) and 192.168.100.102 (CTL)

Network Mask: 255.255.255.0
Once all settings are entered, tap Save to save all changes made and reboot the device to
apply the new network settings.
Software
This Software sub menu allows the user to perform a firmware upgrade when the USB storage
device containing the latest firmware file is inserted. Tap Upgrade to start the firmware
upgrade process. Refer to the
FIRMWARE UPGRADE section for more details. You can also
view version numbers of various software.