---
product_id: 566400425
title: "128MB HP LaserJet Printer 100-pin Memory for HP LaserJet 1320 2300 2505 2550 2605 2700 2820 2840 3390 3392 4100 4200 4300 5100 8150 9000 (p/n C9121A, Q9121A, Q7709A)"
brand: "keystron"
price: "$98"
currency: MXN
in_stock: true
url: https://www.desertcart.mx/products/566400425-128mb-hp-laserjet-printer-100-pin-memory-for-hp-laserjet
store_origin: MX
region: Mexico
---

# 100-pin fast connectivity 128MB high-speed memory Compatible with 15+ HP LaserJet models 128MB HP LaserJet Printer 100-pin Memory for HP LaserJet 1320 2300 2505 2550 2605 2700 2820 2840 3390 3392 4100 4200 4300 5100 8150 9000 (p/n C9121A, Q9121A, Q7709A)

**Brand:** keystron
**Price:** $98
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your print game—because slow is so last decade!

## Quick Answers

- **What is this?** 128MB HP LaserJet Printer 100-pin Memory for HP LaserJet 1320 2300 2505 2550 2605 2700 2820 2840 3390 3392 4100 4200 4300 5100 8150 9000 (p/n C9121A, Q9121A, Q7709A) by keystron
- **How much does it cost?** $98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/566400425-128mb-hp-laserjet-printer-100-pin-memory-for-hp-laserjet)

## Best For

- keystron enthusiasts

## Why This Product

- Trusted keystron brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightweight & Durable:** Easy to handle without compromising reliability
- • **Boost Your Print Speed:** 128MB memory upgrade for seamless multitasking
- • **Plug & Play Simplicity:** 100-pin design ensures effortless installation
- • **Universal Compatibility:** Works flawlessly with top HP LaserJet series
- • **Future-Proof Your Printer:** Extend your device’s lifespan with enhanced memory

## Overview

This 128MB HP LaserJet printer memory module (100-pin) is designed to turbocharge your HP LaserJet models from 1320 to 9000 series, delivering faster print speeds and smoother performance. Lightweight and easy to install, it’s the perfect upgrade for professionals who demand efficiency and reliability.

## Description



## Features

- Lightweight

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Keystron, LLC |
| Brand | Keystron |
| Item Weight | 1 ounces |
| Product Dimensions | 2 x 2 x 0.3 inches |
| Item model number | C9121A, Q9121A, Q7709A |
| Is Discontinued By Manufacturer | No |
| Number of Items | 1 |
| Size | 128 Mb |
| Manufacturer Part Number | 4328385936 |

## Product Details

- **Brand:** Keystron
- **Computer memory size:** 128 MB
- **Ram memory technology:** SDRAM
- **Special features:** Lightweight
- **Number of pins:** 100

## Images

![128MB HP LaserJet Printer 100-pin Memory for HP LaserJet 1320 2300 2505 2550 2605 2700 2820 2840 3390 3392 4100 4200 4300 5100 8150 9000 (p/n C9121A, Q9121A, Q7709A) - Image 1](https://m.media-amazon.com/images/I/71Z02N45DPL.jpg)

## Questions & Answers

**Q: On my hp 4200, i have killed my 64mb ram trying to add a 48mb ram. do you confirm this 128mb can replace my dead ram on my laserjet hp4200 ?**
A: It should.  Just try not to get it killed again :)

**Q: Hp 4100 has 4 slots. manual says not to remove lowest slot 1. it's 16 mb. why? this keeps me from putting in full 256 mb.**
A: HP incorporates and stores software need by the printer in a portion of the first memory module. Removing this module or placing in a slot other than 1 will make the printer inoperable in most models.

**Q: mpc akai 1000 compatable??**
A: No.  The correct item is at listing below,
https://www.amazon.com/dp/B00SYQ4VD4

**Q: Where is additional memory for an hp laserjet 4200 / 4300 printer installed or where would i get a diagram of this particular printer? thanks!**
A: Mine is an HP 2300. But if you go to Youtube and search "HP 4300 memory" bunch of instructions come up.

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**Shop now:** [https://www.desertcart.mx/products/566400425-128mb-hp-laserjet-printer-100-pin-memory-for-hp-laserjet](https://www.desertcart.mx/products/566400425-128mb-hp-laserjet-printer-100-pin-memory-for-hp-laserjet)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-06*