Archos http://www.archos.com has a bunch of different PC Card PCMCIA and USB devices. their Mini CD is recognized by windows as a standard IDE controller, so no other drivers need to be loaded.
EXP http://www.expnet.com has parallel and PCMCIA devices. their device drivers need to be loaded the first time to run.
both company's devices have different cables to use with each type of computer output. i have both parallel and PCMCIA cables for my EXP ThinCD865, but i have only the PCMCIA cable for my Arhos MiniCD
the EXP is an 8X drive and the Archos is 24X.