HP Smart Tank Plus 551 Wireless All-in-One

Very low running costs. Great print quality. Small footprint. Decent volume rating.

Non-duplexing print engine. Ink bottles not keyed to corresponding onboard tanks. Lacks automatic document feeder.

Bottom Line: The HP Smart Tank Plus 551 bulk-ink AIO prints well and at very low running costs, though its lacks notable productivity and convenience features, compared with its competitors.

Very low running costs. Great print quality. Small footprint. Decent volume rating.

Non-duplexing print engine. Ink bottles not keyed to corresponding onboard tanks. Lacks automatic document feeder.

The HP Smart Tank Plus 551 bulk-ink AIO prints well and at very low running costs, though its lacks notable productivity and convenience features, compared with its competitors.