I have two Chassis an 4506 and a 4507R (newer). I need more slots, so that why I am wanting to move the ethernet cards from one and vice versa. The cards in the 4507R are WS-x4516 supervisor engine V, and a WS-x4548-GB RJ45. The power supply in the 4507R are 2x1400. The blades in the 4506 chassis are WS-x4515, and WS-x4148-RJ. Will this work if I exchange the cards between the two chassis. Also I wasnt sure what the R in the 4507R stands for?
The PoE will work but you need to make sure you have the correct power supplies to drive them.
Gigabit ports will work fine in either chassis.
This can be done quite easily. You will need to modify the interface configurations accordingly when you move the cards. The "R" stands for redundancy which allows you to have two supervisors running active/standby in the same chassis. Non "R" chassis will only accommodate one supervisor.
P.S. You will need to run 12.1(19)EW or later on the 4506 to support the WS-x4548-GB RJ45 line card.
The R means redundant in that the 4507R and 4510R support dual supervisors whereas the other 4500 chassis only support one supervisor.
If you swap the cards over bear in mind that it would help to make sure the cards go in the same slots in the other chassis - that way your config would still work.