Still under warranty if I put back the original HDD?

[blueroom]

I've swapped out the HDD for an SSD in a mid 2010 13" MBP but recently the SD card reader has gone duff. If I put back the original 250GB drive will Apple still honor the warranty?

 

[dagamer34]

You don't need to put the hard drive back because it's user replaceable.

 

[42streetsdown]

replacing the hard drive or RAM doesn't void the warranty

 

[GGJstudios]

Apple Warranty: Installing Memory, Expansion Cards, User Installable Parts Does Not Void Warranty

From 2011 MacBook Pro User Guide:

Your MacBook Pro does not have any user-serviceable parts, except the hard drive and the memory.