ROLADA 45W 19.5V Laptop Charger 4.5×3.0mm Blue Tip

The ROLADA 45W 19.5V laptop charger is a compact replacement power adapter designed to safely power and charge many HP Stream, Pavilion x360 and ProBook models that use a 4.5×3.0 mm tip.

This replacement AC adapter delivers 19.5 V at 2.31 A (45 W) and ships with a blue-tipped 4.5 × 3.0 mm barrel connector. It supports worldwide AC input (100–240 V, 50–60 Hz) and is built to match the power profile of many HP notebooks that originally used 45 W adapters. Before ordering, confirm your laptop’s required wattage and tip size — this unit is not compatible with 65 W, 90 W, 7.4 × 5.0 mm barrels, or USB-C power ports.

Which HP models will this ROLADA charger work with?

This adapter is engineered to fit a long list of HP Stream, Pavilion and ProBook models that use a 4.5×3.0 mm barrel tip and require 19.5 V at about 2.31 A. It covers multiple Stream 11/13/14 SKU variants, Pavilion 11/13/15 series machines, and many ProBook and EliteBook generations listed by model family.

• Supported Stream models: common 11-, 13-, 14-inch SKUs including 11-y010wm and 13-p120nr.
• Pavilion coverage: 11-n010dx, 13-a110dx, 15-au123cl and related 11–15 series devices.
• ProBook/EliteBook families: ProBook 430/440/450 and EliteBook Folio/1040/850 families.
• Compatible part numbers: HSTNN-DA40, TPN-LA15, ADP-45WDB and others for cross-reference.

How does the connector and power rating affect compatibility?

Compatibility depends on two things: the barrel size and the adapter’s output. This ROLADA adapter uses a 4.5 × 3.0 mm barrel and outputs 19.5 V at 2.31 A (45 W). If your laptop requires a higher wattage or a 7.4 × 5.0 mm or USB-C connector, this unit won’t be suitable.

• Barrel size: 4.5 × 3.0 mm — physically required for a correct fit and stable connection.
• Output: 19.5 V, 2.31 A, 45 W — matches devices designed for 45 W adapters only.
• Input voltage: AC 100–240 V, 50–60 Hz — works internationally with proper plug adapter.
• Not compatible with USB-C charging, 65 W/90 W units, or 7.4 × 5.0 mm barrels.

What safety and practical features should I expect?

The adapter includes standard protections and a compact form factor suitable for travel and daily use. It’s built to meet typical safety expectations for aftermarket laptop power supplies, including overload and short-circuit protection, and delivers a stable 19.5 V output for supported devices.

• Overload and short-circuit protection to prevent damage from electrical faults.
• Stable voltage output to keep your laptop running and charging reliably.
• Compact, lightweight housing for portability and desk-friendly use.
• Blue-tip 4.5 mm connector for clear visual compatibility checking.

How do I confirm this adapter is the right replacement?

Verify the original adapter’s label or your laptop’s service manual for output voltage, current and connector size. Compare part numbers and model compatibility lists — many HP part numbers and model families are provided for cross-reference.

• Check your original adapter label for 19.5 V and ~2.31 A (45 W) markings.
• Confirm the barrel connector measures 4.5 × 3.0 mm and has a blue tip on your laptop.
• Match part numbers (e.g., 740015-004, 854054-001) to your device documentation.
• If unsure, contact support or measure the connector before purchase.

Who is this for: This ROLADA 45W adapter is aimed at HP owners whose notebooks specify a 19.5 V, 45 W power input with a 4.5 × 3.0 mm barrel connector — especially students, remote workers and travelers who need a reliable spare or replacement charger for Stream, Pavilion x360, ProBook and some EliteBook systems. If your laptop requires higher wattage or uses USB-C/7.4×5.0 mm, choose a model designed for those specifications instead.