StarTech.com USB 3.0 to Dual Port Gigabit Ethernet Adapter w/ USB Port - 10/100/100 - USB Gigabit LAN Network NIC Adapter (USB32000SPT), Black

Despite what a previous reviewer stated, this device works just fine for link aggregation at near full speed.Link aggregation works by apportioning traffic to multiple destinations to different ports of the aggregated link based on a hash of the destination MAC and IP addresses, so traffic to two destinations could each use a different port and get the full speed of that port. It provides no throughput benefit for a single destination host.To properly test throughput over all ports of the aggregated link, you need to send traffic to two or more destination addresses at the same time. I ran such a test using iperf3 to two destinations with consecutive IP addresses (10.0.1.90, 10.0.1.91), but it still used only one port according to traffic counters on my switch, resulting in only about 460Mbps throughput to each host. When I changed the destination host's address from .91 to .92, this resulted in test traffic going via separate ports and I got close to full speed through both ports simultaneously: 110 MB/sec or 920Mbits/sec. Link aggregation was working as expected.The USB3 gigabit chips used in this adapter are ASIX AX88179, which are well supported by Linux.Whether using link aggregation or not, this is a useful adapter to have.

Great product, full USB 3.0 speed through hub and included power adapter means that I know I won't draw too much current for one port. FYI, it does work quite happily as a hub and with ethernet functionality without the power supply but I've not tried this with much data throughput. Powered, the ethernet port is fast enough to (almost) saturate a gigabit connection (~110MB/sec) but I am almost certain this is due to overheads, cable length and other networking variables which are of no fault of the hub.

All good

Does exactly what it says on the tin. Mostly works without external power, except when my surface pro 3 is low on charge. USB3 cable is fairly chunky and inflexible.

Five Stars! Connected immediately within Windows 8.1.For those who are interested, the adapter does allow paired connections, and the performance is very good.Test setup: Laptop with the USB3 adapter connected via a Netgear gigabit switch to Windows 8.1 PC with dual Intel NICs, each computer using two network cables. After pre-copying a large (10GB) file so that it was cached into memory on the laptop; copying to the PC via the dual link achieved sustained 186MB/s (copy dialog) with balanced loads of 80% utilization (task manager) for each of the two Ethernet circuits. Using a single Ethernet cable gigabit saturation (98%+) was easily achieved. Other scenarios would get different results.

This was bought to provide me with a means of connecting a USB printer to the Ethernet, so all our home machines could print to it without having to leave a dedicated PC running, or an NAS drive.The specification says it can communicate bi-directionally, but at n point does it say it has to be plugged into a computer USB socket to operate.For this reason, I had to send it back.Had I wanted a fast adaptor to plug into a device without a USB3 port, ort an Ethernet port, then it would have been great,Quality was good, and it was very small.

Good. It does the job I want it to do. Internet connection and two USB sticks when setting up new surface pros. Nice if it came with a bag, startech. Over all very happy

Very nice product. The Ethernet did require drivers for my MacBook Pro Yosemite 10.10 - but no problem. They came down fine and installed and worked perfectly.My only criticism is that the blue LED on the back is very bright indeed and almost lights up the room at night :-)