That can PXE boot to the NIC in the USB 3. Atten At5011 Service Manual. 0 dock, we do not have WinPE drivers for it. Lenovo USB 3.0 Dock / Port Replicator. Lenovo Yoga Series.
Looke like tripplec has this right. From Notes: • ThinkPad T420, T420s and T520 models, USB 3.0 port on the Mini Dock Series 3 with USB 3.0 will function as a USB 2.0 port. • Thinkpad T430, T430s and T530 models on the Mini Dock Series 3 with USB 3.0 will function as a USB 3.0 port. • The functionality of the T420, T420s and T520 is a limitation of the Intel Chipset not a defect in either the Thinkpad or Mini Dock Series 3 with USB 3.0 I don't see that on the sales page. Only found it by searching on the part number Z. Your only solutions is to get a good performing Express Slot USB 3.0 Controller.
Its a cheaper solution but check spec's and driver support for it. Historically USB ports with a NEC chipset were trouble free and I alway used to buy PCI boards with them for people who needed more or upgraded ports in their towers. Stay away from VIA chipset they've been a head ache for years and I've wasted so much time with driver trying to get them working properly. I am not sure of the throughput you're going to get for USB 3.0 channeled through the Express Slot on hte 520, Currently I have eSATA chassis with both ports on it (USB 3.0) as well with a large cooling fan and 1.5TB drive for archives and backup.
I am in no rush to get a Express slot solution. When I see a deal with a good chipset and reputable OEM I'll pick one up. Duplicate Email Remover Serial 2.17.2.