If you have a large amount of slides to scan team up with a friend or family member and use the additional slide trays to pre-load slides ready for scanning. The additional 3 trays will enable you to have 9 slides ready to scan while you scan the 3 slides that are in the scanner being procesed.
Product Description
USB Negative Scanner (Negative Trays - 3 Pack)
Brand new in sealed retail box.
No problems I wud recommend anyone buying the scanner to buy extra trays It is a bit pernickety fitting the slides and if you only have the single tray supplied with the scanner its quite time consuming
Not used this product yet, (thought it would be easier to load up a few slides before hand), but seem to be the same as one supplied with scanner and that works a treat, so don't see any reason why these would be any different.