Supermicro SuperO A1SAM-2750F User Manual page 79

Chapter 4: AMI BIOS
Maximum Payload Size
Use this feature to set the maximum payload size for a PC-E slot. The options are
Auto, 128 Bytes, and 256 Bytes.
Maximum Read Request
Select Auto to allow the system BIOS to automatically set the maximum Read
Request size for a PCI-E device to enhance system performance. The options are
Auto, 128 Bytes, 256 Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
ASPM Support
This feature allows the user to set the Active State Power Management (ASPM)
level for a PCI-E device. Select Auto to allow the system BIOS to automatically
set the ASPM level for the system. Select Disabled to disable ASPM support. The
options are Disabled, and Auto.
Warning: Enabling ASPM support may cause some PCI-E devices to fail!
4-19