What: /sys/module/pch_phub/drivers/.../pch_mac Date: August 2010 KernelVersion: 2.6.35 Contact: masa-korg@dsn.okisemi.com Description: Write/read GbE MAC address. What: /sys/module/pch_phub/drivers/.../pch_firmware Date: August 2010 KernelVersion: 2.6.35 Contact: masa-korg@dsn.okisemi.com Description: Write/read Option ROM data. What: /sys/module/ehci_hcd/drivers/.../uframe_periodic_max Date: July 2011 KernelVersion: 3.1 Contact: Kirill Smelkov Description: Maximum time allowed for periodic transfers per microframe (μs) [ USB 2.0 sets maximum allowed time for periodic transfers per microframe to be 80%, that is 100 microseconds out of 125 microseconds (full microframe). However there are cases, when 80% max isochronous bandwidth is too limiting. For example two video streams could require 110 microseconds of isochronous bandwidth per microframe to work together. ] Through this setting it is possible to raise the limit so that the host controller would allow allocating more than 100 microseconds of periodic bandwidth per microframe. Beware, non-standard modes are usually not thoroughly tested by hardware designers, and the hardware can malfunction when this setting differ from default 100.