Gigabyte MD50-LS0 User Manual page 66

Direct Cache Access (DCA)
Options available: Auto/Enabled/Disabled. Default setting is Auto.
DCA Prefetch Delay
Options available: Disabled/8/16/24/32/40/48/56/64/72/80/88/96/104/112. Default setting is 32.
X2APIC
Options available: Enabled/Disabled. Default setting is Disabled.
AES-NI
Enable/Disable AES-NI (Intel Advanced Encryption Standard New Instructions) support function.
Options available: Enabled/Disabled. Default setting is Enabled.
- 66 - BIOS Setup