# AC adapter HP for Compaq tc4400 19V 4.74A 90W power supply

**URL:** https://aio.lv/en/product--hp-902991-001--536944
**Data updated:** 2026-01-13 15:24 (EET)
**Category:** Other Repair Parts
**Manufacturer:** HP
**Manufacturer code:** 902991-001
**EAN:** 5711783913153
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 59.49 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 49.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hp-902991-001--536944

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

AC adapter designed by HP for Compaq tc4400 laptops, rated 19V, 4.74A, 90W. Provides external power and battery charging via a compatible DC connector. Suitable as an original replacement or spare for systems requiring these voltage and current specifications. Compact form factor for portable use and reliable power delivery for everyday office and mobile use.

## Long description

AC adapter HP for Compaq tc4400 19V 4.74A 90W power supply is an external power supply designed to provide consistent power and charging for compatible Compaq tc4400 laptop systems. The adapter delivers 19 volts at up to 4.74 amperes with a maximum output of 90 watts, enabling simultaneous operation and battery charging. Its compact form factor and standard DC connector make it practical for mobile use and desktop replacement scenarios where the original adapter specifications are required.
Advantages
The adapter offers stable voltage regulation and built-in protection against overcurrent and short-circuit conditions, helping to maintain reliable operation of the laptop. Its rated output matches common power requirements for the Compaq tc4400, ensuring compatibility for both powering the device and charging the battery. The compact design and moderate cable length support portability and straightforward connection without excessive bulk.
Suitable for
 Replacing a lost or damaged power adapter for Compaq tc4400 laptops that require 19V, 4.74A, 90W input
 Providing a spare adapter for mobile workers who switch between locations
 Using in office or home setups where an external power supply is needed for continuous operation
 Repair shops and IT departments maintaining legacy Compaq tc4400 systems
Key specifications
 Output voltage: 19 V DC
 Output current: 4.74 A
 Maximum output power: 90 W
 Connector type: standard compatible DC barrel connector for Compaq tc4400
 Functionality: external power delivery and battery charging
 Form factor: compact, portable adapter housing with attached cable
How to use
Connect the AC adapter to a suitable mains outlet using the provided AC cable, then insert the DC connector into the laptop's power socket. Ensure the laptop model matches the adapter's 19V/4.74A specification before use. When connected, the adapter supplies power to the laptop and charges the internal battery. Disconnect the adapter from the mains and the laptop when not in use or during long-term storage to prevent unnecessary power draw. Inspect the connector and cable periodically for signs of wear or damage and replace the adapter if any faults are detected.
Usage recommendations
Use the adapter with laptops that explicitly require 19V and up to 4.74A to avoid compatibility issues. Avoid exposure to moisture and extreme temperatures. If the device shows abnormal heating, noise, or unstable charging, discontinue use and consult a qualified technician. For extended portability, carry a spare adapter and ensure the DC connector fits securely to prevent intermittent connections.

## FAQ

### How much does the HP AC Adapter for Compaq tc4400 19V 4.74A 90W cost, and is it available for purchase?

The price is 59.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 27.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All HP products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HP service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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