Pros: Superior attachment mechanism, inexpensive, simple to install, tight "OEM" fit.

Cons: No documentation at all (how tight can you screw the screws?) What's the heat sink compound?

Overall Review: The Intel OEM CPU coolers use a rivet-type plastic fastener that is hard to get on and easily can pop out and cause thermal problems. This cooler solves this completely with threaded screws for attachment and a mounting plate with threaded sockets that sits on the back side of the motherboard. Fit is precise, no slop or overlap. How tight to screw the heat sink is a mystery; the screws are sprung (tighter compresses the springs). Pre-coated (and covered with a protective plastic shell) with heatsink compound; I put silver on the CPU as well. Power connector is keyed, three-pin but the OEM model is four, I don't know yet if this means any missing fan speed/control or other thermal management issues (no docs at all). This product should be provided as the stock CPU cooler, fortunately its well made an inexpensive enough to just be the default replacement without adding much cost. Docs would be nice, but aren't necessary.

Pros: Complete kit, including power Y adapters, IDE cables, and ECC cache RAM as well as fairly decent features -- RAID migration, alerting and pretty fast read performance (I have it an old P3 system and consider 80MByte/sec good).

Cons: Really slow write performance at high CPU utilization -- 12Mbyte/sec for me. Software works, but has a clunky user interface and the help docs are poorly translated and don't line up with actual product function. Many functions unavailable in BIOS boot utility.

Overall Review: For under a C note, it's not a bad way to get RAID 5 reliability if you're not looking for top-shelf throughput.

Pros: USB-2 high speed, supports gigabit connectivity, includes meaningful status lights and a short USB extension cable so it doesn't block other ports. Effortless Windows XP Pro installation.

Cons: Newegg & Balkin web site claim Mac OS X compatibility, but drivers do not work on OS X on Intel (Macbook) and no updated drivers are available from Belkin. Large, bulky shape almost requires included extension cable. Gigabit speeds probably dubious even on USB2.

Overall Review: Although this does not work in OS X on Intel, if I boot my Macbook to XP Pro, this device works fine. I ended up keeping it even though it is not compatible as advertised since there seems to be no other option.