Lenovo Thinkpad Mini Dock Series 3 Type 4337 x1 USB 3.0 for W520 (NO AC ADAPTER) | eBay
Lenovo ThinkPad W520 Review - StorageReview.com
Refurbished Grade A Lenovo ThinkPad W520 15.6" Laptop, Intel Quad Core I7-2720QM up to 3.3Ghz, 4G DDR3, 320G, DVD, USB 3.0, VGA, DP, DVI, W10P64-Multi Languages Support (EN/ES/FR), 1 year warranty -
Lenovo ThinkPad Basic USB 3.0 Docking Station (Renewed) – UsedPC.com