PCApex has posted a review of the Aero Cool Infinity 25-in-1 card reader.  It is designed much the same as most fan controllers, and sits in an unused 5.25" bay, and offers more than just card reading capabilities.  It sports 2 USB ports and hides a 2.5" notebook HDD in it's interior.  It's not as easy to remove as some devices, but it is more semi-portable than fully portable, and it will solve any card reading problems you might have, and more.

"Moving on, the 'Infinity-Drive' - which sounds like it should be something out of Galaxy Quest is actually an

aluminium 2.5” USB ATA notebook drive enclosure. It has a brushed, anodized finish with plastic end caps and very

little else worth mentioning - apart from the USB port and a little black hole in the back. It is easily removed by

simply pulling it from the bay. When removed, the empty bay is covered by a spring loaded plastic door designed to

look just like the front of the enclosure.""

Here are some more Storage reviews from around the web:

  
Storage

• Seagate FreeAgent Go 120GB USB HDD

  Review @ Mikhailtec

• HighPoint RocketRAID 2314 eSATA Tested @ TweakTown
• Using an Xbox 360 HD DVD Player on a desktop PC @

  Legit Reviews

• Seagate FreeAgent Pro 750GB External Hard Drive

  @ I4U

• Sony Develops Fluid-Filled Bags

  For Hard Disks @ Slashdot

• OCZ Technology Secure Digital Dual Review @

  The TechZone