Connectors and I/O
ASUS equipped the X99 Sabertooth with ten angled SATA ports. All ports offer
6Gbps bandwidth and they've been wired directly to the X99 PCH. Two times two SATA ports can also be combined to a total of two SATA Express ports. There is also a M.2 x2 slot, which has been connected through two PCI Express 2.0
lanes. Overall there is good storage flexibility with this motherboard and gaming systems, workstations as well as enthusiasts rigs can be equipped with plenty of drives. Unfortunately there are no practical power and reset buttons on this motherboard. Nevertheless if you wish to read out post codes, you can do so by downloading the TUF Detective app to your Android or iOS based Smartphone. Once this is done you can connect your phone via USB to the motherboard and start the app. It will then display Information like post codes as well as lot others.
In total you'll find twelve fan headers on the ASUS X99 Sabertooth. With this many fan headers ASUS is breaking all records, since up until today motherboards have been equipped with a maximum of eight fan headers. The fan headers are located around the CPU socket as well as spread over the motherboard. All headers offer 4 Pins, which means fan speeds can be regulated from within Windows, via ASUSs Software.
Looking at the external connectors directly at the back-panel ASUS equipped the X99 Sabertooth with four USB 3.0 ports,
five USB 2.0 ports, two USB 3.1 ports, two Intel gigabit ethernet ports as well as an optical out and an analogue audio panel. Practical: the BIOS reset button.