what does "Enable SSC, Enables PUIS and enables 1.5gbPHY mean?

SSC: Computers today are designed to use a very fast clock speed and need a very accurate clock tic to time all the various processing. What spread spectrum does is take the sharp clean tic signal of your clock generator pulse, weakens it and spreads it into a flattened underpowered group of smaller blurred spikes of similar frequencies. Example: Instead of having a solid and clean 3.6GHz processor clock speed you will have a lower powered clock signal pulsating "around 3.6GHz". If you know a bit about computers you know that computers need a sharp and accurate clock signal to be the fastest and have the most stable timing.

Spread spectrum ON will reduce the "small possibility" of a very little RFI/EMI but at the expense of a more stable computer. With the weakened and blurred "spread spectrum" of clock signals, faster computers will not OC well. Performance RAM and other parts won't run at their full potential. Overclockers spend most of their time boosting voltage and fine tuning various timings to strengthen and tighten the signal for the cleanest clock signals for the quickest, most stable computer systems. I don't know a home user that would ever need Spread Spectrum ON, unless you're using very RFI/EMI sensitive electronic lab equipment in your home.


Power-up in standby (PUIS) or power management 2 mode (PM2)(Western Digital specific) is a SATA or Parallel ATA (aka PATA) hard disk configuration which prevents the drive from automatic spinup when power is applied. The spinup occurs later by an ATA command, only when the disk is needed, to conserve electric power.

PUIS requires corresponding BIOS support. If PM2 is enabled on the drive but not supported by the BIOS, the drive will not be detected by the system or detected as zero in size. PUIS typically only supported on RAID Controllers.

PM2 can usually be enabled by a jumper shunt on the drive but can be configured by other means (configuration sector) using manufacturer specific tools.

Check Wiki Here: http://en.wikipedia.org/wiki/Power-up_in_standby

1.5GB PHY: Switches between SATAT I and SATA II, if it is ON your HDD will be SATA I (For older motherboards). PHY stands for "physical layer". By jumpering pins 5 & 6 will cause the drive to go into a legacy 1.5 Gbit/s mode, rather than its default 3.0 Gbit/s mode.

Check SATA facts here: http://en.wikipedia.org/wiki/Serial_ATA#Throughput

For a home computer used for video editing and a new motherboard, do I need to use the jumper pins at all?  Last time I configured a computer the pins were used as Master and Slave. Do Sata drives do this at all?

Thanks for the quick response and full details