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884420242444
HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable
884420242444

HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable

4.8(91 ratings)

Best price now

$28.88at AmazonChecked 1 h ago

58% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $28.88 at Amazon (checked Nov 11, 2026).
  • Checked at 4 stores.

Our take on the HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable

This is a 1-meter passive copper QSFP cable for InfiniBand DDR and QDR links, sold under HP part number 498385-B21. It carries four lanes in one connector, so a single cable replaces four discrete links between switches and servers. Passive copper keeps latency low and power draw near zero, which is why it remains common in short rack-to-rack runs. It is a legacy 40 Gb-class part: newer EDR, HDR and Ethernet QSFP28 gear needs different cables, so check your adapter and switch generation first.

Best forShort in-rack InfiniBand DDR/QDR linksReplacing failed HP 4X cables in existing clustersHomelab and used-server builds on a budgetDirect server-to-switch runs under one meter
Pros
  • Passive copper: no power draw and very low latency
  • One QSFP connector handles four lanes
  • 1 m length suits top-of-rack and adjacent-rack runs
  • Standard HP part number makes matching existing gear easy
  • Simple plug-and-play with no configuration
Cons
  • Limited to DDR/QDR speeds, not EDR or newer
  • 1 m reach is too short for cross-aisle cabling
  • Thick, stiff copper is awkward to route tightly
  • Not compatible with Ethernet QSFP ports without matching gear
  • Used or surplus stock may show bent latches or worn connectors

HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable prices at every store

  • Hard Disk DirectNew

    In stock

    $68.00Free shippingChecked 1 h ago
    Visit Hard Disk Direct
  • GotodirectNew

    In stock

    $119.06Checked 1 h ago
    Visit Gotodirect
  • Memory ClearanceNew

    In stock

    $67.32+ $65.00 shippingChecked 1 h ago
    Visit Memory Clearance
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $28.88Free shippingChecked 1 h ago
    Visit Amazon

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HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable price history

Lowest price we've seen: $28.88 on Nov 11 at Amazon. Tracked across 4 stores since Nov 11.

What reviewers say

  • 4.8 / 591 ratings

Buyers rate it highly and mostly describe it as a drop-in replacement that works first time in existing InfiniBand fabrics. Complaints are rare and center on the short length and stiff jacket rather than performance.

What people mention
  • CompatibilityPraisedOwners say it connects DDR and QDR gear without negotiation problems.
  • BuildPraisedBuyers describe the connectors and latch as solid and well made.
  • LengthCriticisedSome find 1 m too short for anything beyond adjacent racks.
  • FlexibilityMixedThe thick copper jacket holds its shape, which helps some routing and frustrates tight bends.
  • ReliabilityPraisedReviewers report stable links with no errors in short in-rack runs.

About the HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable

This is an HP InfiniBand copper cable, model 498385-B21. It is 1 meter long and uses the 4X DDR/QDR specification with Quad Small Form Factor Pluggable (QSFP) connectors.

Brand
HP
Model
498385-B21
Length
1 m
Cable type
InfiniBand copper cable
Interface
4X DDR/QDR
Connector
Quad Small Form Factor Pluggable (QSFP)

Questions and answers

Will this work with my EDR or HDR InfiniBand switch?
No. It is a DDR/QDR 4X cable. EDR and HDR ports need faster-rated cables, so match the cable to your switch generation.
Can I use it for 40G Ethernet instead of InfiniBand?
Only if both ends are QSFP ports rated for this passive copper cable. Many Ethernet QSFP+ ports accept it, but check the switch's supported cable list.
Is it compatible with non-HP switches?
Usually yes, since QSFP is a standard connector. Some vendors lock ports to their own coded cables, so verify before buying.
What is in the box?
One 1-meter 4X QSFP passive copper cable. No transceivers or adapters are included.
Is a passive copper cable fast enough compared with fiber?
For runs under a few meters, passive copper adds almost no latency and draws no power. Fiber makes more sense for longer distances.
Does it work with Mellanox adapters?
Mellanox QSFP DDR/QDR adapters generally accept standard passive copper cables. Confirm the adapter's cable compatibility list for your model.
Where is the HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable cheapest?
At Amazon, for $28.88, 58% under what the other stores charge, as of our latest check.
What do buyers say about the HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable?
Rated 4.8 out of 5 from 91 ratings.
Where can I buy the HP 498385-B21 1m 4X DDR/QDR Quad Small Form Factor Pluggable InfiniBand Copper Cable?
4 stores we checked sell it, including Gotodirect, Amazon, Memory Clearance, Hard Disk Direct.