Introduction

Not long ago, we conducted teardowns and simple tests on an HP 4.5mm and USB Dock Adapter; essentially, this is a converter that allows older laptops with only outdated DC charging ports to utilize the most versatile PD charging.

However, in practical life, due to inevitable hardware aging and the increasingly powerful performance of electronic devices, the vast majority of older laptops are completely unable to meet the needs of modern users, and can only collect dust or be completely phased out.

On the other hand, the dedicated high-current DC chargers for these laptops still have many uses because, in terms of performance, they are far from being obsolete.

That's why today we will briefly review an HP USB-C to 3.0mm & 4.5mm adapter, which enables the conversion of DC chargers to PD fast charging output, with a tested maximum output power of 20V 4.25A 85W; Let's take a look.

Product Appearance

Similar to the previous Dock Adapter, the HP USB-C to 3.0mm & 4.5mm Adapter still uses a high flame-retardant PC material shell with a matte surface treatment, making the main body more three-dimensional and sharply angular, similar to a regular hub.

The bottom is marked with a power input icon.

The input end is equipped with two DC barrel jacks, one for 4.5mm and the other for 3mm.

The integrated USB-C cable connection with the body has a common protective sleeve, making it more resistant to bending.

The USB-C connector's shell is embossed with a lightning symbol, and there is also a protective sleeve at the connection point with the cable itself.

Special pin design is adopted internally for the USB-C.

ChargerLAB POWER-Z KM003C indicates that it does not have an E-marker chip.

Connecting a 100W DC power adapter, the USB-C fast charging protocol is read, supporting charging protocols such as DCP and PD2.0.

It has only one fixed PDO of 5V3A.

The length of the HP USB-C to 3.0mm & 4.5mm Adapter is about 67mm (2.64 inches).

The width is also about 48mm (1.89 inches).

And the thickness is about 19mm (0.75 inches).

The length is about 9cm (3.54 inches)

And the weight is about 53g (1.87 oz).

This is how it looks like on my hand, just like a regular hub.

Simple Test

Next, let's see how the HP USB-C to 3.0mm & 4.5mm Adapter performs in actual DC conversion test.

It supports 65W/20W output; for this test, we will use an HP 65W DC power adapter connected to the 4.5mm DC jack.

First, charging a Samsung phone using this setup, we measured an input power of 5.11V 2.78A 14.2W at the phone end.

Switching to a Xiaomi phone, the input power at the phone end decreased to 5.28V 0.95A 5.02W. This is a normal result due to Xiaomi phone's poor PD protocol compatibility.

Finally, charging a Huawei phone, the input power at the phone end was measured at 5.18V 1.98A 10.26W, which is better than Xiaomi.

Summary of ChargerLAB

In conclusion, the HP USB-C to 3.0mm & 4.5mm Adapter injects new vitality into aging laptop power adapters, revitalizing their functionality for modern usage. By facilitating the conversion to PD fast charging output, this adapter offers a practical solution for extending the usability of older laptop accessories.

Looking ahead, ChargerLAB has exciting plans for the coming months. We are thrilled to announce that we will be launching a mysterious device similar to this product, yet with vastly improved performance, port types, and affordability. Stay tuned for the unveiling of this innovative solution, which promises to revolutionize the way we power our devices with older power adapter.

Related Articles：
1. Review of HP 4.5mm DC to USB-C AC Adapter
2. Teardown of HP 4.5mm and USB Dock Adapter (HSA-B006)
3. Simple Test of HP 4.5mm and USB Dock Adapter