Asus TS300-E6/PS4 - Manual (Page 60)

Chapter 4: Motherboard information 4-6
4. LAN controller setting (3-pin LAN_SW1, LAN_SW2)
These jumpers allow you to enable or disable the onboard Intel ® Intel
82574LGigabit LAN controllers. Set to pins 1–2 to activate the Gigabit LAN
feature.
5. Intel ® 3420 SATA port S/W RAID setting (3-pin RAID_SEL1)
This jumper allows you to select the Serial ATA RAID configuration utility to
use when you create disk arrays. Place the jumper caps on pins 1–2 if you
want to use the LSI Logic Embedded SATA RAID Setup Utility (default);
otherwise, place the jumper caps on pins 2–3 to use the Intel ® Matrix Storage
Manager (IMSM).