Presario R4115US powered by a 90W AC adapter

The Presario R4115US (US = available only in the United States) is one of Compaq’s budget laptops, though it has some quality features they are still not enough to make it a multimedia consumer notebook. it is built around an AMD Sempron 3200+ CPU at 1.8 GHz, with PowerNow! technology enable, which means that it saves power never allocating more processor power that a specific application requires. It comes with 512 mg installed system memory and the motherboard supports a maximum upgrade to 2 GB.

As storage facilities it is shipped with a 60 GB SATA hard drive, of course it is replaceable, and a DVD-R/RW and CD-RW combo optical drive with double layer capability.

Presario R4115US

The graphics adapter is quite good, featuring the ATI Radeon XPRESS 200 M, which initially has 128 MB shared DDR memory, if you have enough RAM you can allocate more to the video adapter. The display of the R4115US is a standard Compaq 15.4 inch HD BrightView widescreen that supports up to 1280 x 800 pixels high quality resolution. Sound is provided by an on-board card and built in Altec Lansing speakers. You will also find good network capabilities with the integrated 54g 802.11b/g WLAN, with 125HSM / SpeedBooster and BroadRange support that will connect to the latest Wi-Fi enabled hotspots. In addition there is a 56 K modem and LAN adapter: 10/100 Mbs Base-T.

There is one expansion slot available, a type II/III (32 bit) card slot. Other connectivity options for external devices are as follows: 4 USB 2.0, VGA port, S-Video (TV-out) and the standard audio slots. The battery is a powerful 8-cell LiIon that is capable of providing up to 5 – 6 hours of battery life. It is powered by a 90W AC adapter, which is pretty standard for Presario laptops. Some of the users reported that in several models this AC adapter tends to overheat or it does not charge at all. In these cases there can be various problems, not only originating from the power adapter itself but from the adaptor’s receptacle as well. The most common problems with the Presario R4115US power adapter HP 350221-001 AC Power Adapter occur with the jack or with the receptacle. Though if you usually turn and twist the power cable it happens that the inside wiring breaks and the adaptor doesn’t charge normally or at all.

Compatible 90 W Adaptors for the Presario R4115US notebook

In case you need to replace the R4115US power adapter it is important that you know the voltage specs of the notebook and the adapter itself, because if you buy an adapter with less or more voltage than it is needed it could harm the motherboard or the PC will not charge. Usually Presario notebook use 90W adaptors Lenovo ThinkPad R400 AC Power Supply that generate an 18.5 – 19 V output the input is (100-240V AC, 50-60Hz). HP/Compaq offers spare adaptor on their website from around $40 - $50, but if you google for it you can find better deals like $24 - $30.