Best Buy: HP Scanjet Flatbed Photo Scanner with Transparency Adapter SCANJETG4010
Epson 3170 Scanner Lid Transparency Unit Film Adapter | eBay
Criteria for purchasing a film scanner or a scanner with transparency unit: description of the purchase criteria, evaluation of the producer data and data sheets
Installing the Transparency Unit
Epson Perfection V600 Photo Color Scanner, 6400 x 9600 dpi, Black - Walmart.com