ASUS Connect Dock for Transformer Pad Series Tablets Made just for ASUS Transformer-Series Tablets Docks and charges ASUS tablet via 40 pin connection. Add two USB 2.0 ports, Ethernet port, and 3.5mm audio jack. Elegant design folds and unfolds for docking. Compatible with ASUS Transformer TF201 Series, TF300 Series, and TF700 Series Tablets.