What are the components of the control panel of a PowerEdge MX750c sled?

What are the components of the control panel of a PowerEdge MX750c sled?
A . Power button
USB 3.0 port
micro DisplayPort
iDRAC direct status LED
B . Power button
USB 2.0 port
micro DisplayPort
iDRAC direct status LED
C . Power button
USB 3.0 port
iDRAC micro port
iDRAC direct status LED
D . Power button
USB 2.0 port
iDRAC micro port
iDRAC direct status LED