@Joseph-TP I'll pull the drive details later but the drive isn't the issue. I've tested two enclosures with HDD, SSD, I've tried flash drives -- none of the matters. The common denominators are those...

@Joseph-TP The drive is fine and fast, as stated at the start. Here's the same drive over the same gigabit ethernet connected to another local machine.

@Joseph-TP This is a bad-faith response. The device is advertised for its network file-sharing functionality. The router advertises USB 3.0 -- you have to know that people are interested in the data...

@zacass samba write speed Slightly better over FTP but still only half of USB2.0 speed to a USB3 drive over gigabit ethernet.

I'm getting TERRIBLE speeds from a connected USB3 HDD, on the order of 3-4 MB/sec. Not even good enough to stream HD media from, let alone use as a network storage. This is true whether I'm connected...