I actually bought one of these and put a 512 cf card in a pb 540c.....I want to try a 1 gig card...but an worried it will not work properly...I would appreciate any feed back you might have...

Speed difference is nominal....boot and seek time is awsome...

540c with 360mb SCSI HD about 1 min to 1 1/2 min

540c with 512mb cf with adapter only 20 secs...

Running system 7.5...