The HP M10146-001 is an external AC adapter for supplying power to compatible equipment. It is a 280 W adapter intended for setups that need a higher output rating.
Its output is specified as 19.5 V and 14.36 A. The connection is a barrel type with a 7.4 mm sensor center tip, giving a clear connector detail for identifying this adapter.
This listing describes the unit as an HP AC power adapter, part number M10146-001. Compatibility with specific equipment is not stated here.