$507.36In Stock — Usually Ships in 1–3 Business Days
About the AB542A
HP part number AB542A identifies the AB542A - HP 1GB Kit (4 X 256MB) DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM 2.5V Memory, an enterprise-grade Server Memory unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include capacity of 1 GB, number of sticks of 4, frequency of 266 MHz, connector of 184-pin, voltage of 2.5V, memory class of ECC, Registered. Typical workloads include VMware vSphere VM host memory, Kubernetes worker-node memory pool, in-memory database (Redis, Memcached, SAP HANA), and SAS / Splunk analytic workloads requiring large RAM footprint. Pro Disk Network supplies the AB542A to US business buyers. Stocked units ship in 1–3 business days. Pro Disk Network applies a 90-day functional warranty. Free US ground shipping on orders over $150.
The AB542A is a HP server memory component with capacity 1 GB, number of sticks 4, frequency 266 MHz. Pro Disk Network sells the AB542A for $507.36 with US shipping in 1–3 business days and a 30-day return guarantee.
Quick Answer: What servers is the AB542A compatible with?
The AB542A is a HP server memory module. Confirm DIMM rank, voltage, and speed against the target server's supported memory list before deployment - mixed configurations may downclock to the slowest installed module. For server-specific population diagrams, email sales@prodisknetwork.com with your server serial number.
How fast does the AB542A ship?
Pro Disk Network usually dispatches the AB542A in 1–3 business days. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
The AB542A is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
Hyper-V Cluster Node — Windows Server 2019/2022 Hyper-V hosts with Storage Spaces Direct. Dynamic memory allocation makes higher-density DIMMs cost-effective.
AI / ML Training — PyTorch and TensorFlow workloads benefit from large host memory pools for dataset preprocessing and CPU-side feature engineering.
Tanzu / Kubernetes Workers — Worker node memory expansion for high-density container deployments. Plan for 8–16 GB per moderate Pod baseline.
What is the AB542A?
The AB542A is a HP server memory module with capacity 1 GB and number of sticks 4, manufactured by HP. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with dispatch in 1–3 business days, backed by a 30-day return guarantee.
Pros & Cons of AB542A
Pros
RDIMM / LRDIMM clearly labelled for population-rule clarity
Cons
Server-grade DDR module — does not work in consumer desktops
Buffered (RDIMM) modules require server motherboards
Confirm voltage and channel rules before mixed-density installs
Frequently Asked Questions about AB542A
Is the AB542A a genuine HP part?
Yes. Pro Disk Network sources every AB542A as factory-original HP inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned HP servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
What servers is the AB542A compatible with?
The AB542A is a HP server memory module. Confirm DIMM rank, voltage, and speed against the target server's supported memory list before deployment - mixed configurations may downclock to the slowest installed module. For server-specific population diagrams, email sales@prodisknetwork.com with your server serial number.
How fast does the AB542A ship?
Pro Disk Network usually dispatches the AB542A in 1–3 business days. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
What is the warranty on the AB542A?
New AB542A units carry the full HP manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the AB542A?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the AB542A series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
AB542AR — AB542AR - HP 1GB Kit (4 X 256MB) DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM Memory for Server RP34X0 — $507.36
Pro Disk Network Buyer’s Guide: Server Memory
Compatibility: Rank, Density, and Channel Population Rules
Memory population order for Xeon Scalable is documented in the motherboard manual; the typical rule is to populate channels symmetrically across both CPU sockets and across all six channels per socket. For two-socket builds with eight DIMMs, populate the white slot first on each channel; for sixteen-DIMM builds, populate both slots on every channel. Asymmetric population leaves performance on the table.
Pricing Strategy: New, Bulk, or Refurbished
The AB542A is available across three procurement tiers, and the choice is driven by criticality, warranty coverage, and budget. New (sealed OEM) units carry the full HP manufacturer warranty and command a 20-30% premium over bulk-OEM tier. New (bulk-OEM) units are factory-fresh modules sold without retail box. Refurbished units come from decommissioned servers, are individually MemTest-validated, and carry a 90-day advance-replacement warranty.