If HP confirms that your exact Pavilion x360 supports it, choose the HP MPP 1.51 Pen, 3V2X4AA, for a replaceable AAAA battery and two customizable buttons. Choose the HP Rechargeable MPP 2.0 Tilt Pen, 3J122AA, when the notebook supports that pen and you want USB-C charging and tilt capability. The Pavilion x360 name alone is not enough to choose either one.
This comparison uses HP’s specifications and compatibility records, plus exact retail identity checks. We have not tested handwriting, latency, palm rejection or battery life. The recommendations depend on the computer you own.
Check the laptop before choosing a pen
An active pen communicates with a digitizer in the display. HP’s stylus guidance says that not every touchscreen computer has the required digitizer. Finger input working normally does not prove that a pressure-sensitive active pen will work.
Find the full product name and product number. In Windows, open HP System Information or press Fn + Esc on the notebook’s built-in keyboard. HP also describes finding these details on the computer’s label or through HP Support Assistant in its product-identification guide.
Use that product number to check HP’s specifications, service documentation or accessory compatibility list. Look for the exact supported pen and Microsoft Pen Protocol requirements. If the record only says “touchscreen,” get an exact product-number confirmation from HP before buying an active pen.
For example, HP’s UK compatibility list for the MPP 1.51 Pen names Pavilion x360 15-er1001na, product 715X9EA. Its Netherlands list for the MPP 2.0 Tilt Pen names Pavilion x360 14-ek1015nb, product A5AA6EA. These are specific regional examples, not permission to extend compatibility to every 15-er or 14-ek configuration.
Two HP pens to compare after that check
| Pen and part number | Documented features | Buy only after confirming |
|---|---|---|
| HP MPP 1.51 Pen, 3V2X4AA | AAAA battery, two buttons, 1,024 stated pressure levels | The exact notebook supports this pen and its MPP 1.51 requirement |
| HP Rechargeable MPP 2.0 Tilt Pen, 3J122AA | USB-C charging, two buttons, tilt, 4,096 stated pressure levels | The exact notebook supports this pen and MPP 2.0; desired app supports the features |
HP MPP 1.51 Pen: for replaceable-battery convenience
The HP MPP 1.51 Pen is listed on HP’s US store as 3V2X4AA#ABL. It has two customizable buttons. HP’s specifications for the same base model list a single AAAA battery and 1,024 pressure levels.
This is the practical choice when you prefer carrying a spare battery to remembering another charging cable. HP lists an additional pen tip and an AAAA battery in the package. Check the contents of the exact regional package you order.
Its documented minimum protocol requirement is MPP 1.51. We are not recommending it as a tilt-enabled option, and its pressure-level figure is not a measured comparison of writing quality. Buy for the supported functions you need after confirming the notebook match.
HP MPP 2.0 Tilt Pen: for USB-C charging and tilt
The black Rechargeable MPP 2.0 Tilt Pen is 3J122AA#ABL. HP documents a rechargeable lithium-ion battery, USB-C charging, two buttons, tilt support and 4,096 pressure levels. Its datasheet lists two additional tips and a USB-C cable in the box.
Choose it when charging by cable fits your routine and your supported notebook and drawing app can use tilt. HP specifies MPP 2.0 as the minimum requirement. Do not buy it solely because a seller mentions Pavilion x360 or because your laptop accepts a different older pen.
The larger pressure-level number does not establish that this pen will feel better in your handwriting app. We have not compared its pressure curve, initial response or line quality with the MPP 1.51 model. Verify the features that matter in the software you plan to use.
HP Rechargeable MPP 2.0 Tilt Pen, Black, 3J122AA#ABL
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What to check in the listing
Match the manufacturer part number, color and package contents. The selected rechargeable model here is black 3J122AA#ABL. A listing that groups several pen models or says only “for HP” needs closer checking. Read return terms before ordering, especially when replacing an older pen.
A passive capacitive stylus generally acts like a finger on the screen. It may suit basic tapping, but it does not establish the pressure-sensitive input you are shopping for. A rechargeable “universal” stylus label also does not, by itself, prove communication with the laptop’s active digitizer.
Confirm the hardware match before troubleshooting drivers or settings. Software updates cannot add a missing display digitizer. Once compatibility is established, use HP’s instructions for the exact notebook and pen, then check button assignments and pen behavior in your intended app.
Frequently asked questions
Does every Pavilion x360 work with an active pen?
Do not assume so. Check the exact product number for documented active-pen support and the specific pen or protocol requirement. A touchscreen description alone is insufficient.
Will Bluetooth or Windows Ink make an incompatible pen work?
They cannot supply missing digitizer hardware. Start with HP’s exact compatibility record, then follow the setup instructions for the supported combination.
Is the MPP 2.0 Tilt Pen always the better choice?
Only consider it when the computer supports it. USB-C charging and tilt may be useful, but the higher pressure-level specification is not proof of better writing on every notebook or in every application.
Which pen avoids recharging?
The MPP 1.51 Pen uses an AAAA battery that you replace. The MPP 2.0 Tilt Pen uses a rechargeable battery and USB-C cable. Compatibility comes before that convenience preference.
How were these picks selected?
We compared documented compatibility requirements, power sources and controls for two current HP models. No hands-on test score, cheapest-price claim or blanket Pavilion x360 compatibility is implied.
