I know it's not a particular new subject this has been mentioned on here in 2 main posts here,search scsi2sd but i do think after many many hours i have spent looking for.
This is an affordable modification to at last get a reliable working sd card to negate the hard drive or scsi floppy drive
And granted there have been many successful projects to attain that goal.
I just happen to like this one the best the project is open firmware,all the files are available and the guy Micheal replies to all queries in a timely manner,to the degree i bought 10 pcb's and a complete one to upgrade my music gear and the TT030's and Falcons,Mega STE,and various stfm's ste's
He has just also just brought out a new revision v4.2 with holes to suit the 3.5 to 2.5 trays that are cheap enough on eBay.
This in a 3.5 slot is for the music gear i have that have scsi floppy drives
Make a front panel from some 25x25mm plastic or ally angle with a slot for the sd card.
Anyways a link or two http://www.codesrc.com/mediawiki/index. ... le=SCSI2SD
There is a link to buy at his (about 1/2 way down)online shop
eBay trayhttp://www.ebay.co.uk/itm/371041992521? ... 1423.l2649
Amazon surprisingly has it same pricehttp://www.amazon.co.uk/gp/product/B009 ... J16O67XA5A
Anyways choose as you like,there are so many and it's refreshing to see another open source well thought out project that is practical that does not cost an arm and a leg to realise.