are you looking for 2.5" or 3.5" drive enclosures

Serial ata and "ultra ata" are deffinatly not the same Now-a-days we call ATA, or Ultra ATA just PATA or Parallel ATA to distingish the difference between Sata (serial) and PATA (parallel)

I love Macally enclosures for 2.5" drives.. they also make 3.5" enclosures too..