Skip to main content
  1. Home
  2. Tablets
  3. Computing
  4. Mobile
  5. Legacy Archives

HP’s Slate 21 is a $400 Android all-in-one PC and tablet

Add as a preferred source on Google
HP Slate21 all-in-one
Image used with permission by copyright holder

HP’s not letting companies like Lenovo and Asus walk all over it. In Beijing this afternoon, the company announced the Slate 21, a 21-inch all-in-one computer that doubles as a gigantic tablet and runs Android rather than Windows 8 like its competitors.

Though more and more AiO-tablet hybrids use Windows as the main operating system and run Android apps and the platform when the devices are in tablet mode, the HP Slate 21 does the opposite. It is first and foremost an Android Jellybean 4.2.2 machine that comes preloaded with the Splashtop 2 HD software that lets you access your Windows computer remotely using the Slate 21, as well as KingSoft office software for work and school.

Recommended Videos

This is a big difference from the Lenovo IdeaCenter Horizon, which uses the preloaded Bluestacks software to run Android apps within Windows 8, or the Asus Transformer AiO, which boots to Android when you use the screen as a tablet but runs Windows 8 when used as an AiO.

HP Slate 21_keyboard mouse
Image used with permission by copyright holder

Like most other Android tablets, the Slate 21 is powered by the Nvidia Tegra 4 processor rather than the typical Intel chip in AiOs, which are “slower dual-core CPUs – and they cost more,” according to HP’s blog post announcing the new device. Keeping costs down is a key part of the Slate 21 as the company wants to position the device for the emerging markets like China and Brazil. That’s why the included physical keyboard supports multiple languages in addition to English.

With its 21.5-inch IPS full HD display, at 1920 x 1080 pixel resolution, you can easily share the screen with more than one person, whether you prop the it up by its memory hinge (between 15 and 70 degrees) or lie it flat on a table. Unlike other all-in-ones, the Slate 21 skimps on internal storage to cut costs. In fact, it only offers 8GB of on-board storage, but at least it includes an SD Card slot and comes with three USB 2.0 ports so you can plug in an external hard drive to expand its capacity. It also offers Wi-Fi and Bluetooth connectivity under the hood so the Slate 21 should be able to do what you want right of the box.

HP expects you’ll be sharing the Slate 21 with other users, so the device lets you set up a maximum of five user profiles, meaning you can customize the apps that you and other users see.

At $400, this gigantic 8GB Slate 21 costs the same as a 9.7-inch, Wi-Fi-only, non-Retina iPad 2. They obviously serve different purposes – you hardly expect to slip the HP device into our carry-on bag – but that price tag is still pretty amazing whether for an all-in-one or a tablet. HP won’t be shipping the Slate 21 until this September, so hopefully we’ll get a chance to play with the device before it hits stores. 

Gloria Sin
Former Contributor
Gloria’s tech journey really began when she was studying user centered design in university, and developed a love for…
Apple’s new child safety tools are now available with better controls for screen time, web access, and harmful content
Parents can now start child accounts with a smaller set of approved apps and add more access later
Apple child safety features revealed at WWDC 2026

Apple first previewed a new set of child safety features at WWDC in June, and parents can now start using them with iOS 27, iPadOS 27, and macOS 27. The update gives families more control over which apps children can access, what websites they can visit, who they can communicate with, and how much time they spend in certain app categories.

Apple is also changing Screen Time to make those controls easier to manage. Parents get a clearer view of device usage, quicker access to restrictions, and age-based guidance for setting limits across categories such as Games, Social Media, and Entertainment.

Read more
How to reset an iPad: soft restart, force restart, and factory reset
From a quick reboot to a full wipe, here's every reset trick your iPad actually needs.
iPad Pro on table

Even the best hardware from Apple isn't immune to glitches. iPhones, iPads, and MacBooks are known to run for years without issues, but every so often, your iPad needs a reset to get back on track.

The good news is that resetting an iPad is one of the easiest things you can do on any Apple device. It takes just a few minutes and doesn't require any tech expertise. That said, there are three very different types of resets, and mixing them up can cause more problems than it solves. You don't want to wipe your entire iPad when all you needed was a quick restart.

Read more
Lenovo’s $1000 flagship Android tablet packs everything you’ll ever need
A 4K screen, giant battery, and keyboard in the box? Lenovo’s new tablet goes all out
The Yoga Tab Plus Gen 2 Featured

Lenovo’s latest high-end tablet is finally available in the US, and the company has jam-packed it with hardware that makes it versatile enough for all kinds of work. The Yoga Tab Plus Gen 2, first unveiled at IFA 2026, is now on sale for $999.99 with 12GB of RAM and 256GB of storage.

For that price, you get a 13-inch 4K display, a 12,700mAh battery, and Qualcomm’s Snapdragon 8 Elite processor. More importantly for anyone hoping to do some actual work on it, Lenovo includes the All-in-One Clamshell Keyboard and Tab Pen Pro 2 in the package.

Read more