Question about DMA speed of eSATA 600 drives.

[jd1008]

Have an external drive, wd20npvx , 2 tb.
It spinsx at 7200rpms, and is touted to have 600 gigabit/s
on the wire speed. However, fc20 always connects it as
having dma100, when the esata port supports 300 gigabits/s

So, what's with Fedora to limit it to dma100?

To wit:
[ 3571.062358] ata11: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
.
.
.
[ 3571.063587] ata11.00: ATA-9: WDC WD20NPVX-00EA4T0, 01.01A01, max UDMA/133
.
.
[ 3571.065292] ata11.00: configured for UDMA/100