Specifications

This item controls how long each PCI device can hold the bus before another
takes over. When set to higher values, every PCI device can conduct transactions
for a longer time and thus improve the effective PCI bandwidth. For better PCI
performance, you should set the item to higher values. The options are 0 through
255.
This function on the PnP/PCI Configuration menu allows you to set the
maximum TLP payload size (in bytes) for the PCI Express devices. Use the Page
Up and Page Down keys to scroll through sizes or enter the number using the
keyboard numbers or use the + and – keys to go up and down the list of sizes.