What is a Low Profile PCI Card?Hardware: Multifunction DAQ (MIO)
Problem: What is the definition of a low profile PCI card? What are the electrical and mechanical differences between a low profile card and a standard card? Solution: Low Profile PCI Cards offers a new mechanical standard based on the current PCI Local Bus Specification Revision 2.2. Electrical Low Profile PCI Cards have the same signal protocol, electrical definitions, and configuration definitions as standard PCI cards. All National Instruments Low Profile PCI Cards are electrically backwards compatible with any otherwise compliant PCI slot. Mechanical The Low Profile PCI Card Standard has added new mechanical card height and depth specifications to the existing PCI Local Bus Specification, Revision 2.2. This standard was adopted in late 2000 as an Engineering Change Notice (ECN) by the PCI SIG Group. There are two defined card lengths for low profile PCI 2.2 - MD1 and MD2. MD1 defines the shortest 32-bit card length available of 121.79 mm and MD2 defines the maximum card length of 169.52 mm and can accommodate 32-bit or 64-bit PCI Bus connector standards. Due to the height difference of the metal retention bracket, low profile PCI cards do not securely insert into standard PCI slots. National Instruments does not sell a bracket adapter that allows low profile cards to remain securely fastened in standard PCI slots. Related Links: KnowledgeBase 27IFE055: Is There a Low-Profile, Half-Height, or Half-Length PCI-GPIB Board Available? Attachments:
Report Date: 01/23/2002 Last Updated: 11/06/2008 Document ID: 2HM7I2AL |
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