What does "low profile" stand for, connected to hardware?
Solution 1
You have a few PCIe form factors:
You have different card and/or bracket heights:
FH - Full-height
HH - Half-height
And different card lengths:
FL - Full-length
HL - Half-lenth
"Low-profile" is synonymous with half-height, half-length (HHHL).
An HBA like the HP H240 is a half-length card that comes with full-height and half-height brackets, and can fit into either type of server slot. If using with a Server like an HP DL360p Gen8, this give you options on card placement.
Solution 2
In a general sense "low profile" usually means roughly "thin" or to a lesser extent "small".
In the specific case of PCI and similar cards "low profile" means that the card is small enough to fit vertically in a 2U rackmount case or a desktop case of similar thickness.
Note that low profile slots require a different bracket (the metal piece that surronds the external connectors and joins card to case) from standard slots. A card with a low profile bracket won't fit in a standard slot. A card with a standard bracket can be inserted in a low profile slot but you won't be able to screw it in place or put the lid back on the case. Many low profile cards come with a pair of interchangable brackets to allow fitting in either standard or low profile slots but not all do.
Solution 3
In the linked example, it is a description of the interface card's "form factor" -- it's physical properties of size and shape. It's about half the height of a regular PCI-E card.
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RayofCommand
Updated on September 18, 2022Comments
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RayofCommand almost 2 years
When it comes to hardware I often read something like "Apple Mac computers, and other lower profile ...." For me it sounds like a better word for low end segment hardware but I am not sure about it. Google didn't help me well to answer this question. Is there something more connected to it? I need it to fully understand some articles. Term is used here for example: HBA H240
Storage controller - plug-in card - low profile
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A E over 8 yearsIn the context of expansion cards it usually means "thin", sometimes it means "short". Why they can't just say "thin" or "short", I don't know. In your Apple Mac quote, it sounds like it's just the general non-IT meaning of "less well known".
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TomTom over 8 yearsAND: it is not lower end hardware. It is less HIGHT. Like 2U rack servers - too small for full height.
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RayofCommand over 8 yearsyep, I got that immediately :) , thanks for adding this info anyway
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ewwhite over 8 yearsHmm, I usually see half-height slots with a horizontal orientation.
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ewwhite over 8 yearsNah... The HP DL300 series servers have horizontal half-height slots in their 1U and 2U servers (e.g. DL380 G7)
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J... over 8 years@RayofCommand This is specific to PCIe cards, per your question, but in general the term
low profile
can apply to a lot of different hardware and can mean more or less specific things in each case. Sometimes it indicates a specific form factor, sometimes it just means somewhat vaguely smaller or thinner than typical. Other examples are things like RAM (ie: VLP/ULP Very Low Profile/Ultra Low Profile)