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Reliable 4GB DDR4-2400 SO-DIMM improving laptop stability.
Z9H55AA
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4GB DDR4-2400 SoDIMM - 4 GB - 1 x 4 GB - DDR4 - 2400 MHz
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Z9H55AA
- Description:
- 4GB DDR4-2400 SoDIMM - 4 GB - 1 x 4 GB - DDR4 - 2400 MHz
- Rating:
Added to cart 28 times recently
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In stock - Ready to Ship
- Brand:
- Hp
- GTIN:
- 766168895017
- Condition:
3 Year Extended Warranty
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Z9H55AA Overview
Z9H55AA is a DDR4 UDIMM memory module with a speed of 3200 MHz, CAS latency of CL16, operating at 1.35V and available in an 8 GB module size. It comes in a single channel kit configuration, is non-ECC, unbuffered, and is designed for compatibility with desktop systems.
Z9H55AA features an integrated heatspreader for efficient thermal management and does not support RGB lighting. This module is primarily engineered for gaming builds, while also being suitable for workstations and certain server configurations.
Z9H55AA price is is available on request. Get immediate quote.
Request bulk order quote for Z9H55AA for additional pricing. Browse the full Hp Memory & Ram series or explore all Hp products.
Z9H55AA Specifications
- Product Type
- Computer Memory
- Memory Type
- DDR4
- Capacity
- 8 GB
- Compatible Platforms
- Desktop
- Compatible Systems
- Tower Server / Workstation
- Form Factor
- UDIMM
- Kit Configuration
- Single Channel
- Speed
- 3200 MHz
- Operating Temperature
- N/A
- Reliability Rating
- Standard
- CAS Latency (CL)
- CL16
- Voltage
- 1.35V
- ECC Support
- No
- Registered/Buffered
- Unbuffered
- XMP Support
- Intel XMP 2.0
- RGB Lighting
- No
- Heatsink / Heatspreader
- Yes
- Intel Platform Support
- Intel 11th Gen
- AMD Platform Support
- AMD Ryzen 3000
- Use Case
- Gaming
- Product Name
- Z9H55AA 8GB DDR4 UDIMM
- Height
- 1.2 inches
- Width
- 5.3 inches
- Depth
- 0.5 inches
- Weight
- 0.3 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| Z9H55AA |  T0E50AA |  Y7B54AA |  Y7B56AA |  B4U36AA | |
|---|---|---|---|---|---|
| Product Type | Computer Memory | Computer Memory | Computer Memory | Computer Memory | Computer Memory |
| Memory Type | DDR4 | DDR4 | DDR4 | DDR4 | DDR4 |
| Capacity | 8 GB | 16 GB | 16 GB | 16 GB | 16 GB |
| Compatible Platforms | Desktop | Desktop | Desktop | Desktop | Desktop / Laptop / Server |
| Compatible Systems | Tower Server / Workstation | Workstation | Workstation | Workstation | Workstation |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Kit Configuration | Single Channel | Dual Channel | Single Channel | Dual Channel | Dual Channel |
| Speed | 3200 MHz | 3200 MHz | 3200 MHz | 3200 MHz | 3200 MHz |
| Operating Temperature | N/A | N/A | N/A | N/A | N/A |
| Reliability Rating | Standard | Standard | Standard | Standard | Standard |
| CAS Latency (CL) | CL16 | CL16 | CL16 | CL16 | CL16 |
| Voltage | 1.35V | 1.35V | 1.35V | 1.35V | 1.35V |
| ECC Support | No | No | No | No | No |
| Registered/Buffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered | Unbuffered |
| XMP Support | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 | Intel XMP 2.0 |
| RGB Lighting | No | No | No | No | No |
| Heatsink / Heatspreader | Yes | Yes | Yes | Yes | Yes |
| Intel Platform Support | Intel 11th Gen | Intel 10th Gen | Intel 12th Gen | Intel 12th Gen | Intel 13th Gen |
| AMD Platform Support | AMD Ryzen 3000 | AMD Ryzen 3000 | AMD Ryzen 5000 | AMD Ryzen 5000 | AMD Ryzen 5000 |
| Use Case | Gaming | Gaming / Workstation | Gaming | Gaming | Gaming |
| Product Name | Z9H55AA 8GB DDR4 UDIMM | T0E50AA DDR4 16GB 3200MHz UDIMM Memory Module | Y7B54AA High Performance DDR4 16GB UDIMM Memory | Y7B56AA DDR4 16GB Dual Channel Memory Kit | B4U36AA DDR4 Memory Kit |
| Height | 1.2 inches | 1.2 inches | 1.2 inches | 1.38 inches | 1.2in |
| Width | 5.3 inches | 5.0 inches | 5.2 inches | 5.3 inches | 5.3in |
| Depth | 0.5 inches | 0.3 inches | 0.5 inches | 0.5 inches | 0.2in |
| Weight | 0.3 lbs | 0.3 lbs | 0.2 lbs | 0.35 lbs | 0.3lbs |
Reviews & Ratings
D
Daniel Okoro
5
Smooth installation and steady multitasking support.
C
Claudia Silva
4
Dependable memory for mobile professionals.
J
Jared Coleman
4
Consistent 2400MHz speeds without compatibility issues.
N
Nadia Rahim
5
Solid RAM upgrade for business laptops.
Questions & Answers
What is the HP Z9H55AA 4GB DDR4-2400 SoDIMM?
The HP Z9H55AA is a 4 GB DDR4-2400 MHz SoDIMM memory module designed for laptops and small form-factor PCs, delivering reliable performance and energy efficiency.
Which laptops support the 4GB DDR4-2400 SoDIMM module?
This 4 GB DDR4-2400 SoDIMM is compatible with any laptop or mini-PC featuring a DDR4 SO-DIMM slot and support for 2400 MHz memory frequency.
How do I install the 4GB DDR4-2400 SoDIMM in my laptop?
Power off and unplug your laptop, open the memory compartment, align the notches, insert the SoDIMM at a 30° angle, press down until it clicks, then reassemble and power on.
Can I mix this 4GB DDR4-2400 SoDIMM with other memory modules?
Yes, you can mix it with other DDR4 modules, but for optimal performance match the capacity, frequency (2400 MHz), and timings of existing modules.
What advantages does DDR4-2400 SoDIMM offer over DDR3?
DDR4-2400 SoDIMM provides higher bandwidth, lower power consumption (1.2 V vs. 1.5 V), and improved reliability compared to DDR3 memory.
Is this 4GB DDR4-2400 SoDIMM single- or dual-rank?
The HP Z9H55AA module is single-rank, ensuring compatibility with most laptop memory controllers and efficient data access.
Does the 4GB DDR4-2400 SoDIMM support ECC?
No, this module is non-ECC (unbuffered), designed for consumer laptops where error-correcting code is not required.
What are the CAS latency timings of the DDR4-2400 SoDIMM?
This 4 GB DDR4-2400 module typically operates at CAS latency 17 (CL17) for balanced performance and stability.
How much power does the 4GB DDR4-2400 SoDIMM consume?
Operating at 1.2 V, this DDR4-2400 SoDIMM consumes significantly less power than DDR3 modules, helping extend battery life.
Will the 4GB DDR4-2400 SoDIMM improve my laptop’s performance?
Upgrading to this DDR4-2400 SoDIMM can boost multitasking and application load times, especially if you’re upgrading from lower-frequency or smaller modules.
Can I install more than one 4GB DDR4-2400 SoDIMM in my system?
Yes, most dual-channel systems support two identical modules; installing two 4 GB DDR4-2400 SoDIMMs enables dual-channel mode for higher bandwidth.
What warranty covers the HP Z9H55AA 4GB DDR4-2400 SoDIMM?
HP provides a limited lifetime warranty for this memory module, covering defects in materials and workmanship under normal use.
How do I verify the module is running at 2400 MHz?
Enter your BIOS or use a system information tool like CPU-Z to confirm the installed DDR4 module is operating at its rated 2400 MHz frequency.
Is the 4GB DDR4-2400 SoDIMM heat-spreader equipped?
No, this SoDIMM uses a standard PCB design without an external heat spreader, as its power consumption remains low at 1.2 V.
Does HP test each 4GB DDR4-2400 SoDIMM for compatibility?
Yes, HP performs rigorous validation tests on each SoDIMM to ensure compatibility and stability with HP notebook and mini-PC platforms.
What is the module’s lifetime expectancy?
Under normal operating conditions, this DDR4-2400 SoDIMM is rated for thousands of hours of continuous use, matching typical laptop longevity.
How do I return or replace the 4GB DDR4-2400 SoDIMM if it’s defective?
Contact HP support within your warranty period for RMA instructions; once approved, you can return the defective module for replacement.