Which HP all-in-one system allows the display to be mounted in portrait or landscape mode?

The HP Engage One Pro is uniquely designed with a versatile stand that allows its main display head to be mounted in either portrait or landscape mode. This adaptability is a key feature, enabling businesses to customize the point-of-sale setup to fit specific counter space requirements and application interfaces. The system's advanced column stand facilitates this rotation, providing flexibility that is not a standard feature on the other listed models.

A. HP Engage One Go 10: This is a mobile tablet system. While the tablet itself can be rotated, its primary docking stands are designed for a fixed landscape orientation.
B. HP Engage Go 13.5: Similar to the Engage One Go 10, this is a mobile-first system whose standard docking solutions are primarily for landscape use.
D. HP Engage One: The original HP Engage One model features a stand that fixes the display in a landscape orientation only.

1. HP Engage One Pro All-in-One System Datasheet. (Document ID: 4AA7-6617ENW, Rev. 5, May 2022). Page 1 states, "Create the ideal checkout for your needs with a versatile AiO. Mount it in portrait or landscape, on a stand, or on the wall." The document includes images clearly showing both orientations.

2. HP Retail Solutions Configuration Guide. (Document ID: 4AA7-2324ENW, Rev. 21, October 2023). In the "HP Engage One Pro" section (page 11), the description of the Advanced and Basic stands notes the ability to configure the system in portrait or landscape mode.

3. HP Engage One All-in-One System QuickSpecs. (Document ID: c05597321, Rev. 13, October 2018). The diagrams and descriptions for the original HP Engage One (pages 1, 4) exclusively show and describe a landscape orientation for the display when used with its standard stand.