Dell EMC VEP4600 Operating System Installation Manual page 8

After the POST Lower DRAM Memory test text displays, the cursor moves to the upper left corner of the console window.
Curser
4. Press the Delete button until the Press <DEL> ... string displays on the console window.
Console window
NOTE: If you miss the setup screen, a boot up screen displays. If this happens, power cycle the VEP4600 and press the
Delete button. Repeat the process until you see the setup screen.
Setup screen
8 VEP4600 start up and serial console connection