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Chapter 4: BIOS Setup
■ PCI Express Device Register Settings
 Relaxed Ordering
Enable or disable PCI Express Device Relaxed Ordering.
 Extended Tag
Enable or disable Extended Tag.
 No Snoop
Enable or disable PCI Express Device No Snoop option.
 Maximum Payload
Set Maximum Payload of PCI Express Device or allow System BIOS to select the
value.
 Maximum Read Request
Set Maximum Read Request Size of PCI Express Device or allow System BIOS to
select the value.
■ PCI Express Link Register Settings
 ASPM Support
Enable or disable ASPM Support
 Extended Synch
Enable or disable Extended Synch
 Link Training Retry
Defines number of retry attempts software will take to retrain the link if previous
training attempt was unsuccessful.
 Link Training Timeout
Defines number of micro-seconds software that will wait before polling "Link
Training " bit in link status register. Values range from 10 to 1000 uS.
 Unpopulated Links
In order to save power, software will disable unpopulated PCI Express links, if this
option set to 'Disable Link'.
 Restore PCIE Registers
On non-PCI Express aware OS's (Pre Windows Vista) some devices may not be
correctly reinitialized after S3. Enabling this register PCI Express device
configurations on S3 resume. Warning: Enabling this may cause issues with other
hardware after S3 resume.
Spectra GmbH & Co. KG
[email protected] | www.spectra.de
User Manual
Spectra PowerBox 3000‐Serie
Version 1.0
Oktober 2014
95