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Full Discussion: Could USB ever take over PCI
Special Forums Hardware Could USB ever take over PCI Post 302843685 by verdepollo on Wednesday 14th of August 2013 11:59:02 AM
Old 08-14-2013
Hardly -- For instance, PCI can transfer up to 16 GB/s whereas the most recent USB devices are peaking at 4-5 Gbps (~600 MB/s).

Nowadays most commercial PCI cards use 16 transfer lanes (known as PCI 16x) whereas USB has only two.

This also means that PCI buses are much larger than a USB slot. PCI is great for performance-critical scenarios while USB is great for portability.

Quote:
why wouldn't this work?
It would definitely work, but there's no benefit from doing it that way other than 'for the sake of science'. Smilie
 

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USB_TEMPLATE(4) 					   BSD Kernel Interfaces Manual 					   USB_TEMPLATE(4)

NAME
usb_template -- USB templates SYNOPSIS
To compile this module into the kernel, place the following line in your kernel configuration file: device usb_template To load the module at boot time, place the following line in loader.conf(5): usb_template_load="YES" DESCRIPTION
The usb_template module implements various USB templates that are needed when programming an USB device side driver. A USB template consists of an USB device descriptor, one or more USB configuration descriptors, one or more USB interface descriptors, one or more USB endpoint descriptors, USB strings and additional USB descriptors. The USB template module currently has templates for USB Mass Storage, USB CDC Eth- ernet and Message Transfer Protocol. USB templates are currently selected using the "hw.usb.template" sysctl. The "hw.usb.template" value can be changed at any time, but will not have any effect until the USB device has been re-enumerated. SEE ALSO
usb(4) STANDARDS
The usb_template module complies to the USB 1.0, 2.0 and 3.0 standard. HISTORY
The usb_template module was written by Hans Petter Selasky <hselasky@FreeBSD.org>. BSD
March 18, 2014 BSD
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