Epson Stylus Pro 10600 Reference Manual page 128

Note:
To enable the Speed & Progress button, click Start, Settings,
Printer, right-click your printer icon, Properties, then Utility tab.
The available settings are as follows.
High Speed Copies
To print multiple copies of your document faster, select High
Speed Copies.
Show Progress Meter
To monitor the progress of your print job, select Show Progress
Meter.
EPSON Printer Port (For Windows Me, 98, and 95 only)
To speed up the data transfer rate to EPSON printers, select
EPSON Printer Port.
If your computer supports ECP mode, enable DMA transfer to
speed up printing.
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