Hey there! I'm planning to buy also an optibay, but i can say that im quite new to "upgrade" stuff about mac. I have an early 2011 macbook pro 13" Got hitachi 320gb hdd on it. I have been looking/reading quite much on optibay and alternatives topics, but it seems abit complicated. I still have some questions in my head. My plan is buying a corsair force series 120gb ssd and seagate momentus xt 500gb. Im planning to have my ssd on optibay and momentus xt on hd bay. My ssd gonna be the boot disk. 1-) My first question is, i have been checking ebay for to buy optibay.Have found 2 of them; i know the second one(18$) is compatible with 2011 mbp 13" but, i dont know if the first one(5$) is also compatible with it? And both of them are sata2 - 3gbps? First one for 5$ Second one for 18$ Or do you recommend any other seller/product/page which is sending to turkey also? I would like if the seller send it to me with dvd enclosure with extra price. 2-) Do i need any other cable/adapter for this? 3-) What's the exact problem about hibernation and sleeping? I read something like this; It's something important for me actually, because i always use my mac on sleep/hibernation mode. I mean i just close the screen, and thats it. I almost never shut down my computer. So what i understand is, that its not waking up after sleep if i have my ssd on optibay and as a bootdisk? Because its not checking optibay sata when its gonna wake up? Can i get over/fix it with anything else? Is there any good fix for that like using Smartsleep program? If yes; is it working just like closing the screen and sleeping or should i put it to sleep mode manually? Or is it waking up normally when i just open the screen back? 4-) I have heard that there is some problems with momentus xt & mbp. Probably there is many who are using it here. Is it working fine with firmware SD24? Checked that there is a new firmware version SD25, is it working better with SD25 without any problems? 5-) Is that so riscy to have Momentus XT on optibay slot? Or does momentus xt has own SMS or any other sensor? 6-) Read that momentus xt is almost not stopping to spin. Is there any good fix for that? 7-) Is adding optibay effecting battery life much? When you are done with all, is time machine saving both 2 discs or just the boot disc? All im wondering about it, before i start buying stuff and use. Hope you guys can help me! Thanks!