Acer ASA 420 Active Stylus - AES 2.0 - USI 2.0 - Built-in Battery

The Acer ASA 420 is an active stylus with a built-in Li-ion battery, designed for use with compatible Acer TravelMate and Chromebook Spin devices. Supporting both AES 2.0 and USI 2.0 protocols, it is compatible with a broad range of Acer devices that support AES 1.0/2.0 or USI 1.0/2.0 — making it a practical standardized accessory for education and business environments deploying multiple Acer device models. 4096 pressure levels and a 20g–450g tip force range provide writing and annotation precision suitable for note-taking, form completion, and markup workflows.

The stylus delivers up to 8 hours of continuous inking time under AES 1.0/2.0 (approximately 4 hours under USI 1.0/2.0) and weighs 4 grams with the battery installed. At 125.4mm in length and 5.3mm in diameter, it fits the stylus slots of the TravelMate B3 Spin, TravelMate P4, Chromebook Spin 511, and Chromebook Spin 512. Each unit ships with a Quick Start Guide.