HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots
Request exact-unit photography. No unverified model image substituted.
catalog label
HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots
HP HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots — Optics & transceivers
A technical record does not certify stock, condition, current orderability or a factory-approved BOM.
Identity & purchasing scope
HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots — the identity baseline for comparing HP optics & transceivers offers. Field notes: title-derived · capacity / module size 10GB, 40GB. Evidence labels separate reviewed from unverified values. Use the quote basket to collect this record, then confirm the final configuration with the sales team.
This record identifies HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots in the HP optics & transceivers catalog. Its classification is catalog label. Preserve the full identifier when comparing offers: suffixes, revisions and assembly contents are part of the purchasing question.
Prepare an ASTER RACKIT sourcing request for HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots. Record the exact part number, required quantity and destination system. Review the listed evidence and confirm the offered unit, accessories and compatibility before purchase. Use the technical record to prepare an inquiry rather than as evidence that an item is available, tested, licensed or covered by a particular warranty. Inherited fast-shipping and stock language is not carried into this catalog's commercial fields.
Inherited search aliases: 661685-001-LOW P · 661685 001 LOW P · 656089-001-LOW P · 656089 001 LOW P · 649281-B21-LOW P · 649281 B21 LOW P. These are lookup aids, not certified equivalents.
Recorded technical specifications
Each field states its evidence status. Inherited and title-derived values remain unverified; reviewed OEM facts do not certify an offered configuration.
Field
Recorded value
Source snapshot
Title-derived · capacity / module size
10GB, 40GB
title-derived-v27-1 unverified_inherited
Configuration & purchase checks
Identify the devices and ports at both ends of the planned connection. Transceiver form factor alone is insufficient.
State line rate, reach, fiber or copper medium, connector type and any breakout requirement.
Check manufacturer coding, supported software, lane mapping and the target equipment qualification policy.
Separate optical modules, patch cables, DACs and AOCs as purchasing items so required accessories are not omitted.
Ask for labels, connectors and cable markings. A server boot screen cannot establish optical or switch compatibility.
Adding an item prepares a local RFQ line. It does not create a price offer, reserve inventory or submit an order.
Common project contexts where buyers request this optics & transceivers. Contexts inform the inquiry — they are not compatibility claims.
01
Data-center interconnect upgrades
02
Campus fiber build-out
03
Spare optics standardization
Frequently asked questions
What is the HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots?
The HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots is a recorded HP optics & transceivers identity (catalog label). Recorded highlights: Title-derived · capacity / module size 10GB, 40GB.
Are the specifications on this page verified?
The record carries 1 technical fields, each with an evidence label. Reviewed fields come from OEM catalog evidence; unverified fields stay visibly marked and should be confirmed before purchase.
How do I get a price for the HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots?
Add the record to the quote basket and send the inquiry — ASTER RACKIT confirms price, condition and availability in a written quotation.
Does an image on this page show the actual offered unit?
No. Images are reference material only. Request exact-unit photography with serial numbers before committing to an order.
Platform relationships & upgrade review
No explicit target-platform relationship is provided for this record. Brand, socket, capacity and visual resemblance alone must not be used to invent a compatibility claim.
Related records below are category neighbors. They are not approved replacement parts.
Actual-unit evidence to request
01
Complete module label
02
Connector and dust caps
03
Latch and housing
04
Cable markings if applicable
05
Packaging
No server boot-screen image is attached to this record. Request product photographs and any diagnostic or entitlement record as separate evidence.
Optical transceivers lined up for inspectionFiber runs into a spine switchOptics inspection under the bench magnifierFiber patch panel in the rack
Facility reference scenes from our warehouse and test benches. They show the environment and handling standard for this equipment family — they are not photographs of the exact offered unit.
At acceptance, compare the delivered unit, labels and accessories with the approved list. Retain source revisions and receiving records for later maintenance.
Source trace & documentation
Remaining review: manufacturer identity · product family · category · all reseller-asserted technical fields · OEM model existence · compatibility · lifecycle · current availability · Identity/category association requires review
Source file
Source record
Evidence status
lib/customer-reference-catalog.json
itc-80718
Inherited snapshot; not re-certified
lib/customer-reference-catalog.json
itc-80718-factory-new
Inherited snapshot; not re-certified
IT Creations ↗ Source-listed identity; technical fields require review · reseller_product_page · 2026-09-12T09:00:15.480Z · medium
IT Creations ↗ Source-listed identity; technical fields require review · reseller_product_page · 2026-09-12T09:00:15.805Z · medium
IT Creations ↗ Source-listed identity; technical fields require review · reseller_product_page · 2026-09-12T09:00:16.414Z · medium
HP HP MCX354A-FCBT-HP-LOW P — Mellanox Connectx-3 Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - HP 544QSFP ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots — Optics & transceivers
Title-derived · capacity / module size
10GB, 40GB
includes
ADAPTER WITH HALF HEIGHT / LOW PROFILE BRACKET - NO CABLES OR TRANSCEIVERS INCLUDED
HP HP 489190-001-HIGH P — HP Storageworks 81Q / Qlogic QLE2560 Hba 8GB Fc PCI-E 2.0 X8 ( 1 ) Single Port Sfp+ Fibre Channel Host Bus Adapter - Half Height Card With Full Height / High Profile Bracket — Optics & transceivers
HP 649281-B21-LOW P — HP 544QSFP Hca 10GB / 40GB Fdr / En Infiniband 4X CX3 PCI-E 2.0 X8 DUAL Port Host Channel Adapter - Mellanox Connectx-3 ( 2 ) Two Quad Small Form Factor Pluggable Transceiver Slots
Record port speeds, media type and uplink quantities.
This guide adds the decisions, documents and next steps that support this page.
Reference-based generated scenes; actual-unit photos are available only through an explicit unit-specific request. Related models are separate catalog records, not substitutes for the item on this page.
