With a powered eSATA, what's the difference between GND

eSATAp ports are a mixed connector that does both powered eSATA and USB.

The GND_DRAIN is actually part of the USB3 standard, not eSATA.

The GND-DRAIN pin is used as a signal/data ground (return), and the GND is used as a power ground.

Ƭᴇcʜιᴇ007

Posted 2013-10-26T16:43:49.280

Reputation: 103 763

So does that mean GND_DAIN is not conected to the USB's GND? Let's say I have a eSATAp port on my pc and a SATA Harddisk, then I want to connect the HDD to the eSATAp port. Can I just connect together the 3 GNDs from the SATA HDD data pins then connect it to the eSATAp's GND_DRAIN? Then connect the TX, RX pins and provide power to the HDD... Will it work?

http://en.wikipedia.org/wiki/Serial_ATA#Data_connector http://www.ayagroup.com/images/USB3.0_SuperSpeed_Tutorial.jpg

– Shinji – 2013-10-27T17:07:51.987

With a powered eSATA, what's the difference between GND_DRAIN and the USB's GND?

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