We have to Convert Dell PowerEdge T560 to Rack Mode and put it into rack. For install rails, I removed the system feet.

To remove system top cover, I removed the front IO module. I couldn't find any screw and tried to push the cover in back direction, but it doesn't work. I did show 2 latches above front IO Mode, but I can not move it.

My question: 1. Can the system top cover be removed for converting into Rack mode? 2. Do I need to use special tools

to remove the system top cover?  By the way I know that the T640 is possible to be converted to rack mode(The system top cover is easy to be removed). Thanks.