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

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.

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.

All good

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.

Bought 2. Running on two HP DL20 G9's with ESXi 6. Needs the VIB from VirtuallyGhetto (Google it) but takes 2 minutes and a reboot, a cracking setup - I now have 4 x 1Gbs NICs. Supports LACP, Jumbo Frames (4000k max, not 9500k), fast, - 2 x 1Gbs will in no way flood a USB 3.0 port running at 5Gbs. Very happy bunny. And its on Prime.

I bought this product in Jan 2015 to provide 2Gb connection between my NAS and PC.It didn't come with any supplied drivers but it does use the standard Intel drivers advised by StarTech.Although it does work as advised, I've not been able to use it as it interferes significantly with my Logitech Performance MX mouse. I've tried positioning it further away through a USB 3.0 cable, but still no joy - my mouse pointer disappears, gets frozen or jitters.I am very dissapointed and I would not advise getting it, if you have such a cordless mouse, although it should work with corded mice and maybe other branded mice where the frequency can be changed.

Been using this in conjunction with a throwing star lan-tap from Hak5 to monitor the connection between my firewall and modem passively. This requires two spare ethernet ports and my ultrabook has none. But using this and wireshark running on linux, I can collect passively from both in/out ports at the same time!!!Couldn't get it to work the same way on my windows box, but not fussed about that.

As my headline suggests this will work and works well for for connecting you a 1Gbps to a single network or 1Gbps to another network. However it doesn't work for link aggregation. I have tested this in all 4 possible combinations:Link aggregation setup on the switch + Link aggregation setup in windowsLink aggregation setup on the switch + No link aggregation setup in windowsNo link aggregation setup on the switch + Link aggregation setup in windowsNo link aggregation setup on the switch + No link aggregation setup in windowsEach time pulling files from 2 different network locations which has throughput of more than 2Gbps connectivity it will only pull single or dual files at a total of 1Gbps (110MB/sec). So don't buy if you are looking to double your speed but if you want to connect to more than 1 network at once with Ethernet it's great.