When I bought HP B110 printer there was a black phtosmart cartridge which is slightly bigger than the coloured cartridges but fits in slightly different slot. The ordinary 364 black cartridge doesnt fit in the slot. Can I only use the black photosmart cartridge in this printer?HP CN245B Photosmart Wireless e-All-in-One Printer
Hi Daisy; Amazing - there have been 459 reviews of the CN245B printer (also known as B110a), and you're the only one to mention this problem. You're right - the CN245B (B110a) uses LARGE black cartridges (364XL), but SMALL (364) colour cartridges. You cannot use the larger 364XL colour cartridges in thus printer, and none of HP's combi packs of 4 cartridges are compatible with this printer. If you bought a pack of four 364 cartridges, you'd have to throw the black one away. If you bought a pack of four 364XL cartridges, you'd have to throw away all the colour cartridges!. You must buy 384 colour and 364XL black cartridges separately - which, of course, makes the CN245B even more expensive in terms of ink costs.