# Compatible ink cartridge ActiveJet AH-21RX (replacement for HP 21XL C9351A) — Black, 20 ml, High (XL) yield

**URL:** https://aio.lv/en/product--activejet-cqiacjh21r--4575952
**Data updated:** 2026-01-21 10:57 (EET)
**Category:** Inkjet Printer Cartridges
**Manufacturer:** ActiveJet
**Manufacturer code:** CQIACJH21R
**EAN:** 5904356286819
**Warranty:** 5 Years
**Availability:** Available for order
**Price:** 10.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 9.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--activejet-cqiacjh21r--4575952

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Compatible ActiveJet AH-21RX black ink cartridge is a refurbished, premium replacement for HP 21XL C9351A. It contains 20 ml pigment-based black ink with high (XL) yield and comes single-packed in a box. Designed for inkjet printers compatible with HP 21XL, it offers about 30% more prints than the OEM and is suitable for everyday document printing. Dispose following local hazardous waste rules.

## Long description

The Activejet AH-21RX ink cartridge is a compatible replacement for the HP 21XL C9351A black cartridge. It contains 20 ml of high-quality black ink and is designed for easy installation and reliable performance in compatible HP printers. The cartridge is offered in Activejet's product range that includes Premium (refurbished components) and Supreme (new components) variants, and its manufacture follows quality checks monitored by external auditors.
Advantages
Activejet AH-21RX provides higher ink volume than many original cartridges while maintaining accurate black tones and sharp text. Many components and printing heads in the Activejet range are made from European parts. The cartridge is tested during production and audited by independent organisations such as TUV Rheinland and BSI.
Suitable for
Home printing of documents and black-and-white materials
Small office use with moderate to high black text output
Replacement for HP 21XL / C9351A cartridges
Key specifications
Brand: ActiveJet
Model: AH-21RX (MPN: CQIACJH21R)
Compatible with: HP (replacement for HP 21XL C9351A)
Printing colour: Black
Cartridge capacity: High (XL) Yield
Ink volume: 20 ml
EAN: 5904356286819
How to use
Remove the empty HP 21XL/C9351A cartridge according to your printer's manual, unpackage the Activejet AH-21RX cartridge and remove any protective tape or cap before installation. Insert the cartridge into the designated slot until it clicks into place, then run a printer alignment or nozzle check if required. Follow any on-screen prompts from the printer to complete installation.
Usage recommendations
Store the cartridge upright in a cool, dry place away from direct sunlight. Use within the manufacturer's recommended period after opening for best print quality. If printing quality decreases, run printer head cleaning and alignment routines before replacing the cartridge.

## Specifications

### Features

| Feature | Value |
|---|---|
| Type | Compatible |
| Print technology | Inkjet printing |
| Compatibility | HP Deskjet: F300, F310, F325, F335, F340, F350, F370, F375, F379, F380, F390, D1311, D1320, D1330, D1341, D1360, D1400, D1420, D1430, D1445, D1455, D1460, D1468, D1470, D1500, F2100, F2110, F2120, F2128, F2140, F2180, F2187, F2188, D2300, D2320, D2330, D2345, D2360, D2400, D2430, D2445, D2460, 3910, 3915, 3918, 3920, 3930, 3930v, 3940, 3940v, F4100, F4135, F4140, F4172, F4180, F4185, D1560, D1568, F2200, F2210, F2240, F2250, F2280, F2290. HP Officejet: 4300, 4311, 4314, 4315, 4315v, 4315xi, 4350, 4355, J3600, J3680. HP PSC: 1400, 1401, 1402, 1406, 1408, 1410, 1410v, 1410xi, 1417. HP Fax: 1250. |
| Printing colours | Black |
| Cartridge capacity | High (XL) Yield |
| Replacement for | HP |
| Brand compatibility | HP |
| OEM code | HP 21XL C9351A |
| Quantity per pack | 1 pc(s) |
| Ink type | Pigment-based ink |
| Black ink volume | 20 ml |
| Black ink cartridges quantity | 1 |
| Supply type | Single pack |
| Black ink type | Pigment-based ink |

### Weight & dimensions

| Feature | Value |
|---|---|
| Package type | Box |

### Certificates

| Feature | Value |
|---|---|
| Certification | ISO 9001, ISO 14001, TUV (ISO/IEC 19752, ISO/IEC 19798), CE |

### Other features

| Feature | Value |
|---|---|
| Compatible ink types, supplies | 21XL C9351A |
| Page yield footnote | +30% print more than OEM |
| Technology | Refurbished |
| Version | Premium |
| Class | A+ |

## FAQ

### How much does the ActiveJet AH-21RX compatible ink cartridge — HP 21XL replacement cost, and is it available for purchase?

The price is 10.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 230 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 29.06.2026 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: 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 ActiveJet 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 ActiveJet 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, cartridge capacity, brand compatibility, printing colours, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for ActiveJet AH-21RX compatible ink cartridge — HP 21XL replacement?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/4575952/62702435_large.webp