There isn't. If you've got a 160mm psu and an optical drive. Put the optical in the second 5.25 bay for easier cable management. If your PSU is LONGER than 160; DEFINITELY move it to the second slot. Lol. My specs are in my sig; posted via mobile before so didn't show.
Yeah I did that too; I removed the HDD cage and put my 3.5 and 2.5 at the bottom. BUT then I changed everything again..
. I don't even use the 3.5 bay device. I don't use an optical (USB dvd drive is what I use, i almost never use it, so I saw little to no point in installing one).
I've got 2 SSD's in a Silverstone 5.25 bay adapter in my top 5.25 bay; along with a 3.5 scythe fan controller; which sticks out the front (great adapter! lol). My HDD is now external only. Sits on my desk. It's also the loudest thing of my computer XD
Are your sig specs up to date? They're fairly old. The fact you're using a D14 would suggest you're running something different?
This is my rig.. A collage I already had made. Not quite up to date. I now have a GTX 670 Asus DCUII. That's my old 580 in there. I also moved my case back down on the floor (ew dust); but wanted the space on my desk lol.
But as you can see I have no rear fan installed. I've never felt the need for it. I swapped my PSU around to exhaust from inside the case because it whines a tiny bit. And it bothered me when it was on my desk. So I swapped it around (making the top vent/filter pointless). But otherwise the air is just all one direction really.
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