Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Will they work for Apple Mac Pro (8-Core Xeon 5400 Series) 2nd Gen, Early 2008?
Document: Works very well, installation was smooth. I fully recommend this if you really want to put your old Mac pro to use.
Installed 32 GB one month ago, in a Mac Pro 1,1 2.66 GHz works fine, very easy to install, no hiccups at all.
Worked perfectly in the 2008 series PowerEdge  2950 server we are still supporting. Dropped them in and they worked! Great.
Works perfectly inside my Mac Pro 1,1 from late 2007!! Installed the maximum supported memory for my system to squeeze a few more years out of my monster Mac Pro 1,1.
Purchased this ram to fill up the 8 slots on our Dell Poweredge 1900 after we upgraded to Windows Server 2008 R2. Keeps on trucking along so, so far so good.
This purchas fulfills everything I expected it to: faster everything. Works great in my 2008 MacPro. Temperature of the core and hard drives remains low. Recommended.
I am astounded at the price and quality of this memory. Contacted the vendor via email to verify that this would be compatible with our server and they responded within a day of my email to them. Purchased for our HP ProLiant DL380 G5. Was an alright server at 2 x Quad Core Xeon with 8GB of memory, but needed more memory to VM some old physical servers we need to take offline. Ordered this based solely because of the amazing reviews.
No problems so far... works great in my 2.1 MacPro. Really notice the difference now... well worth the upgrade-- Can't run Mtn. Lion on my 2.1 Mac, but Lion works fine.
Was a little bit skeptical about buying memory from an unknown brand, but after proper installation it seems to be running like a champ. I had to re-install several times as it is necessary to install properly to get all sticks to show up, but after following directions for my mac, everything is fine. I would definitely recommend.
it was great got here quick . rep was helpful and we a lots of room to work on maps.
Answer: I do not know about apple, but my guess would be yes, I also run Xeon 5400 series and they worked for me.