Pros: * Fits perfectly. * Easy to attached/detach

Cons: It might be a bit *too* easy to detach when you lift the adapter upwards, so just keep that in mind if you're expecting to be able to keep them permanently attached together. It sticks well when you push downwards on it and doesn't come off when within the slot.

Overall Review: * It comes in a three pack via a reclosable bag. * The only hollow area is the bottom with length-wise stabilisers. The black bit on top is merely a smooth area. I had purchased this to make the Transcend ExpressCard UHS SD Reader completely flush across the width of the 54mm slot. When attached to the aforementioned reader, the adapter is ~0.25-0.5mm shorter than the exterior-facing edge.

Pros: Perfect fit to stabilize half size cards

Cons: None

Overall Review: Just the right item

Pros: Mounts on my 34mm card and stabilizes it into a 54mm card.

Cons: I feel like StarTech could have made it attach a little better. Was hard to get the stabelzier to hold the card at first. Also, sort of an awkward fit in my machine with the curve (a square design would have held better).

Overall Review: Only needed one, but they only sell 3

Pros: Cheap, works as advertised. I put a gigabit adapter in my old Dell Inspiron 9400 and this kept things from wiggling around.

Cons: They come in packs of 3. What to do with the other ones? They're not much good for picking gunk out between your teeth.

Overall Review: The best thing you can say about this little spacer is you can plug it in, it does it's job, and you can forget about it.

Pros: Near perfect fit, stabilizer is 1-2mm recessed compared to edge of expresscard which is flush with laptop body

Cons: Three pack (not really a con, but how many laptops do you see with more than 1 expresscard slot?)

Overall Review: Paired with a Transcend RDF-1

Pros: Simple and effective. Fits nice and snug on a 34mm card, preventing any sideways movement in a 54mm ExpressCard slot.

Cons: Doesn't prevent ExpressCard slots with push-to-eject springs from ejecting your (SATA, USB, network, etc.) card every time you push/plug a cable into it.

Overall Review: No instructions, but there's a little notch/cutout that to help you get the stabilizer in the correct position. When the card is fully inserted, the stabilizer will be flush with the edge of the laptop.